./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0 --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:29:51,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:29:51,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:29:51,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:29:51,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:29:51,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:29:51,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:29:51,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:29:51,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:29:51,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:29:51,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:29:51,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:29:51,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:29:51,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:29:51,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:29:51,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:29:51,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:29:51,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:29:51,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:29:51,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:29:51,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:29:51,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:29:51,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:29:51,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:29:51,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:29:51,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:29:51,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:29:51,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:29:51,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:29:51,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:29:51,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:29:51,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:29:51,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:29:51,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:29:51,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:29:51,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:29:51,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:29:51,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:29:51,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:29:51,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:29:51,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:29:51,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 15:29:51,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:29:51,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:29:51,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:29:51,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:29:51,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:29:51,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:29:51,368 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:29:51,368 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:29:51,368 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:29:51,369 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:29:51,370 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:29:51,370 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:29:51,370 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:29:51,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:29:51,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:29:51,371 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:29:51,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:29:51,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:29:51,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:29:51,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:29:51,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:29:51,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:29:51,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:29:51,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:29:51,373 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:29:51,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:29:51,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:29:51,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:29:51,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:29:51,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:29:51,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:29:51,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:29:51,376 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:29:51,376 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_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-11-22 15:29:51,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:29:51,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:29:51,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:29:51,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:29:51,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:29:51,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-22 15:29:51,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/data/194d2f9bf/2d5ded5d4cc74fd18ce9074dd6af65b9/FLAG55f48ea94 [2021-11-22 15:29:52,354 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:29:52,354 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-22 15:29:52,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/data/194d2f9bf/2d5ded5d4cc74fd18ce9074dd6af65b9/FLAG55f48ea94 [2021-11-22 15:29:52,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/data/194d2f9bf/2d5ded5d4cc74fd18ce9074dd6af65b9 [2021-11-22 15:29:52,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:29:52,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:29:52,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:52,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:29:52,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:29:52,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:52" (1/1) ... [2021-11-22 15:29:52,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68235096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:52, skipping insertion in model container [2021-11-22 15:29:52,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:29:52" (1/1) ... [2021-11-22 15:29:52,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:29:52,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:29:52,927 WARN L230 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_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-22 15:29:52,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:52,988 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:29:52,998 WARN L230 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_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-22 15:29:53,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:29:53,048 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:29:53,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53 WrapperNode [2021-11-22 15:29:53,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:29:53,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:53,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:29:53,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:29:53,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,120 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 276 [2021-11-22 15:29:53,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:29:53,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:29:53,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:29:53,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:29:53,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:29:53,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:29:53,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:29:53,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:29:53,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (1/1) ... [2021-11-22 15:29:53,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:53,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:53,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:53,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:29:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:29:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:29:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:29:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:29:53,400 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:29:53,402 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:29:53,679 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:29:53,686 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:29:53,687 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-22 15:29:53,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:53 BoogieIcfgContainer [2021-11-22 15:29:53,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:29:53,690 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:29:53,690 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:29:53,693 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:29:53,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:29:53,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:29:52" (1/3) ... [2021-11-22 15:29:53,695 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48edd523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:29:53, skipping insertion in model container [2021-11-22 15:29:53,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:29:53,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:29:53" (2/3) ... [2021-11-22 15:29:53,696 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48edd523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:29:53, skipping insertion in model container [2021-11-22 15:29:53,696 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:29:53,696 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:53" (3/3) ... [2021-11-22 15:29:53,698 INFO L388 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-11-22 15:29:53,744 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:29:53,744 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:29:53,744 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:29:53,744 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:29:53,744 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:29:53,745 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:29:53,745 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:29:53,745 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:29:53,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 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) [2021-11-22 15:29:53,814 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-22 15:29:53,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:53,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:53,820 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-22 15:29:53,821 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:53,821 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:29:53,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 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) [2021-11-22 15:29:53,833 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-22 15:29:53,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:53,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:53,834 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-22 15:29:53,834 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:53,842 INFO L791 eck$LassoCheckResult]: Stem: 53#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 39#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 20#L29true assume !(0 == base2flt_~m#1 % 4294967296); 50#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 59#L57-2true [2021-11-22 15:29:53,845 INFO L793 eck$LassoCheckResult]: Loop: 59#L57-2true assume !false; 37#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 34#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 59#L57-2true [2021-11-22 15:29:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-11-22 15:29:53,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:53,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097267548] [2021-11-22 15:29:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:53,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:54,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:54,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097267548] [2021-11-22 15:29:54,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097267548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:54,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:54,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:29:54,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272857321] [2021-11-22 15:29:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:54,056 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-11-22 15:29:54,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:54,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381693910] [2021-11-22 15:29:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:54,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:54,072 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:54,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:54,148 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:54,149 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:54,149 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:54,149 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:54,150 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:54,150 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,150 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:54,150 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:54,150 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-11-22 15:29:54,150 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:54,151 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:54,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:54,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:54,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:54,302 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:54,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:54,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:54,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:29:54,363 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:29:54,363 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: [] [2021-11-22 15:29:54,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-22 15:29:54,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:54,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:54,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:29:54,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:54,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:29:54,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:54,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:54,469 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:54,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:54,476 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:54,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:54,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:54,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:54,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:54,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:54,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:54,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-11-22 15:29:54,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:54,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:54,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:54,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:54,610 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:54,615 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:54,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,621 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 [2021-11-22 15:29:54,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:54,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:54,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:54,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:54,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:54,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:54,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:54,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:29:54,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:29:54,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:54,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,699 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 [2021-11-22 15:29:54,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:54,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:54,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:54,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:54,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:54,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:54,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:54,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:29:54,729 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:54,733 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:54,733 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:54,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:54,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:54,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:54,742 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:54,742 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:54,742 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-22 15:29:54,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:29:54,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:54,771 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:54,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:54,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:54,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:54,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:54,928 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 [2021-11-22 15:29:54,931 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 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) [2021-11-22 15:29:55,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 72 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 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 207 states and 347 transitions. Complement of second has 6 states. [2021-11-22 15:29:55,014 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 [2021-11-22 15:29:55,019 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) [2021-11-22 15:29:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2021-11-22 15:29:55,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-22 15:29:55,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-22 15:29:55,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-22 15:29:55,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 347 transitions. [2021-11-22 15:29:55,043 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2021-11-22 15:29:55,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 79 states and 120 transitions. [2021-11-22 15:29:55,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-11-22 15:29:55,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-11-22 15:29:55,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2021-11-22 15:29:55,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:55,052 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2021-11-22 15:29:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2021-11-22 15:29:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-22 15:29:55,085 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) [2021-11-22 15:29:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2021-11-22 15:29:55,087 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2021-11-22 15:29:55,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:55,111 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) [2021-11-22 15:29:55,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-11-22 15:29:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:55,194 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-11-22 15:29:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:55,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2021-11-22 15:29:55,205 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-22 15:29:55,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2021-11-22 15:29:55,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-11-22 15:29:55,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-22 15:29:55,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2021-11-22 15:29:55,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:29:55,213 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-22 15:29:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2021-11-22 15:29:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-22 15:29:55,218 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) [2021-11-22 15:29:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2021-11-22 15:29:55,221 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-22 15:29:55,221 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-22 15:29:55,222 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:29:55,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2021-11-22 15:29:55,223 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-22 15:29:55,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:55,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:55,224 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:55,224 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:55,224 INFO L791 eck$LassoCheckResult]: Stem: 456#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 430#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 431#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 459#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 435#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 436#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 437#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 438#L57-5 [2021-11-22 15:29:55,225 INFO L793 eck$LassoCheckResult]: Loop: 438#L57-5 assume !false; 440#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 441#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 438#L57-5 [2021-11-22 15:29:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-11-22 15:29:55,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:55,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920837563] [2021-11-22 15:29:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:55,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:55,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:55,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920837563] [2021-11-22 15:29:55,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920837563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:55,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:55,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:29:55,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696625560] [2021-11-22 15:29:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:55,291 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-11-22 15:29:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:55,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051956709] [2021-11-22 15:29:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:55,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:55,314 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:55,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:55,369 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:55,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:55,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:55,370 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:55,370 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:55,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:55,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:55,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-11-22 15:29:55,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:55,370 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:55,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:55,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:55,456 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:55,457 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:55,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:55,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:55,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-22 15:29:55,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:55,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:55,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:55,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:55,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:55,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-22 15:29:55,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:55,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:55,561 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:55,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:55,574 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:55,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:55,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:55,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:55,575 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:55,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:55,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:55,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-11-22 15:29:55,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:55,575 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:55,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:55,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:55,672 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:55,672 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:55,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:55,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:55,687 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 [2021-11-22 15:29:55,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:55,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:55,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:55,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:55,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:55,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:55,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:55,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-22 15:29:55,717 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:55,720 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:55,720 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:55,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:55,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:55,727 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:55,727 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:55,727 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:55,727 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-22 15:29:55,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-22 15:29:55,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:55,763 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:55,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:55,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:55,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:55,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:55,844 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 [2021-11-22 15:29:55,844 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) [2021-11-22 15:29:55,880 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. [2021-11-22 15:29:55,884 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 [2021-11-22 15:29:55,885 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) [2021-11-22 15:29:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2021-11-22 15:29:55,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-22 15:29:55,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-22 15:29:55,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-22 15:29:55,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:55,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2021-11-22 15:29:55,888 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-11-22 15:29:55,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2021-11-22 15:29:55,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-11-22 15:29:55,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-22 15:29:55,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2021-11-22 15:29:55,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:55,890 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2021-11-22 15:29:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2021-11-22 15:29:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2021-11-22 15:29:55,893 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) [2021-11-22 15:29:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2021-11-22 15:29:55,894 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-11-22 15:29:55,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:55,895 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) [2021-11-22 15:29:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:55,947 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-22 15:29:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:55,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-11-22 15:29:55,951 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-22 15:29:55,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2021-11-22 15:29:55,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-22 15:29:55,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-22 15:29:55,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-22 15:29:55,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:29:55,956 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-22 15:29:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-22 15:29:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-11-22 15:29:55,959 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) [2021-11-22 15:29:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-11-22 15:29:55,959 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-22 15:29:55,960 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-22 15:29:55,960 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 15:29:55,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2021-11-22 15:29:55,960 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-22 15:29:55,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:55,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:55,961 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:55,961 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:55,962 INFO L791 eck$LassoCheckResult]: Stem: 674#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 651#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 652#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 677#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 656#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 657#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 658#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 659#L47-3 [2021-11-22 15:29:55,962 INFO L793 eck$LassoCheckResult]: Loop: 659#L47-3 assume !false; 675#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 668#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 659#L47-3 [2021-11-22 15:29:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-11-22 15:29:55,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:55,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822463898] [2021-11-22 15:29:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:55,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:55,987 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-11-22 15:29:56,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392657318] [2021-11-22 15:29:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,029 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:56,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-11-22 15:29:56,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401651586] [2021-11-22 15:29:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,054 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:56,117 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:56,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:56,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:56,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:56,117 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:56,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:56,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:56,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-11-22 15:29:56,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:56,118 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:56,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:56,189 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:56,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:56,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:56,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-22 15:29:56,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,251 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:56,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:56,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-22 15:29:56,352 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:56,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,359 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:56,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:56,359 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:56,359 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:56,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:56,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,359 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:56,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:56,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-11-22 15:29:56,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:56,360 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:56,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,490 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:56,490 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:56,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-22 15:29:56,496 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 [2021-11-22 15:29:56,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:56,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:56,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:56,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:56,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:56,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:56,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:56,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:56,521 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:56,521 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:56,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,522 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,528 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:56,528 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:56,528 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:56,528 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-22 15:29:56,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-22 15:29:56,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,551 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:56,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:56,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:56,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:56,645 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 [2021-11-22 15:29:56,646 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) [2021-11-22 15:29:56,656 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. [2021-11-22 15:29:56,656 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 [2021-11-22 15:29:56,657 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) [2021-11-22 15:29:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-11-22 15:29:56,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-22 15:29:56,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:56,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-22 15:29:56,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:56,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-22 15:29:56,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:56,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2021-11-22 15:29:56,660 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-22 15:29:56,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2021-11-22 15:29:56,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-11-22 15:29:56,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-11-22 15:29:56,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-22 15:29:56,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:56,662 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-22 15:29:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-22 15:29:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-22 15:29:56,665 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) [2021-11-22 15:29:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-11-22 15:29:56,665 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-22 15:29:56,666 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-22 15:29:56,666 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 15:29:56,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-11-22 15:29:56,666 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-22 15:29:56,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:56,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:56,667 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:56,667 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:56,668 INFO L791 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 773#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 774#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 802#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 778#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 779#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 780#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 781#L47-3 assume !false; 799#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 785#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 789#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#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; 796#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 793#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 794#L57-8 [2021-11-22 15:29:56,668 INFO L793 eck$LassoCheckResult]: Loop: 794#L57-8 assume !false; 786#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 788#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 794#L57-8 [2021-11-22 15:29:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2021-11-22 15:29:56,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000635702] [2021-11-22 15:29:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:56,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:56,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000635702] [2021-11-22 15:29:56,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000635702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:56,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:56,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:56,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301396999] [2021-11-22 15:29:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:56,701 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-11-22 15:29:56,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875752393] [2021-11-22 15:29:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,708 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:56,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:56,745 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:56,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:56,745 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:56,745 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:56,745 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:56,745 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:56,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:56,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-11-22 15:29:56,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:56,745 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:56,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:56,840 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:56,840 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:56,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:56,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:56,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-22 15:29:56,893 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-22 15:29:56,893 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: [] [2021-11-22 15:29:56,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,899 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-22 15:29:56,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:56,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:56,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:56,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:56,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-22 15:29:56,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:56,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:56,977 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:56,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:56,982 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:56,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:56,983 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:56,983 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:56,983 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:56,983 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:56,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:56,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:56,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-11-22 15:29:56,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:56,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:56,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:57,093 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:57,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,096 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-22 15:29:57,113 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 [2021-11-22 15:29:57,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:57,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:57,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:57,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:57,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:57,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:57,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:57,133 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:29:57,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,169 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,180 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 [2021-11-22 15:29:57,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:57,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:57,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:57,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:57,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:57,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:57,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:57,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-22 15:29:57,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:57,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:57,209 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:57,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,212 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-22 15:29:57,215 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:57,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:57,216 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:57,216 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-22 15:29:57,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:57,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:57,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:57,347 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 [2021-11-22 15:29:57,347 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) [2021-11-22 15:29:57,369 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. [2021-11-22 15:29:57,371 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 [2021-11-22 15:29:57,374 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) [2021-11-22 15:29:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2021-11-22 15:29:57,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-22 15:29:57,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:57,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2021-11-22 15:29:57,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:57,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-22 15:29:57,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:57,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2021-11-22 15:29:57,379 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-22 15:29:57,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2021-11-22 15:29:57,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-22 15:29:57,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-11-22 15:29:57,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-22 15:29:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:57,383 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-22 15:29:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-22 15:29:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2021-11-22 15:29:57,387 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) [2021-11-22 15:29:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-22 15:29:57,390 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-22 15:29:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:57,392 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) [2021-11-22 15:29:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:57,408 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-22 15:29:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:57,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-11-22 15:29:57,410 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-22 15:29:57,410 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2021-11-22 15:29:57,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-11-22 15:29:57,411 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-11-22 15:29:57,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2021-11-22 15:29:57,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:57,411 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-11-22 15:29:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2021-11-22 15:29:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-11-22 15:29:57,414 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) [2021-11-22 15:29:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-11-22 15:29:57,414 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-22 15:29:57,414 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-22 15:29:57,414 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 15:29:57,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2021-11-22 15:29:57,415 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-22 15:29:57,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:57,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:57,415 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:57,415 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:57,416 INFO L791 eck$LassoCheckResult]: Stem: 1032#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1005#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 1006#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1036#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1010#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 1011#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1012#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1013#L47-3 assume !false; 1034#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1023#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1016#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; 1017#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1026#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#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; 1030#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1027#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1029#L47-5 [2021-11-22 15:29:57,416 INFO L793 eck$LassoCheckResult]: Loop: 1029#L47-5 assume !false; 1031#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1038#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1029#L47-5 [2021-11-22 15:29:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2021-11-22 15:29:57,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:57,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876837403] [2021-11-22 15:29:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:57,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:57,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876837403] [2021-11-22 15:29:57,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876837403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:57,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:57,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:29:57,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094388640] [2021-11-22 15:29:57,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:57,466 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-11-22 15:29:57,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:57,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59336192] [2021-11-22 15:29:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:57,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:57,471 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:57,475 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:57,499 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:57,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:57,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:57,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:57,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:57,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:57,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:57,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-11-22 15:29:57,519 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:57,519 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:57,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,609 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:57,609 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:57,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,610 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:57,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:57,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-22 15:29:57,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,682 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:57,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:57,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-22 15:29:57,741 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:57,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,747 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:57,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:57,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:57,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:57,747 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:57,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:57,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:57,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-11-22 15:29:57,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:57,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:57,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:57,815 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:57,817 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:57,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,818 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,820 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 [2021-11-22 15:29:57,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:57,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:57,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:57,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:57,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:57,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:57,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:57,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-22 15:29:57,841 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:57,854 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:57,854 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:57,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:57,855 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:57,857 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:57,857 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:57,857 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:57,857 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-22 15:29:57,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-22 15:29:57,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:57,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:57,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:57,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:57,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:58,007 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 [2021-11-22 15:29:58,007 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) [2021-11-22 15:29:58,030 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. [2021-11-22 15:29:58,030 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 [2021-11-22 15:29:58,034 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) [2021-11-22 15:29:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-11-22 15:29:58,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2021-11-22 15:29:58,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2021-11-22 15:29:58,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2021-11-22 15:29:58,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2021-11-22 15:29:58,042 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-22 15:29:58,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2021-11-22 15:29:58,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-11-22 15:29:58,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-11-22 15:29:58,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2021-11-22 15:29:58,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:58,046 INFO L681 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2021-11-22 15:29:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2021-11-22 15:29:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-11-22 15:29:58,060 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) [2021-11-22 15:29:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-22 15:29:58,061 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-22 15:29:58,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:58,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:29:58,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:29:58,063 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) [2021-11-22 15:29:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:58,124 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-11-22 15:29:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:29:58,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2021-11-22 15:29:58,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-22 15:29:58,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2021-11-22 15:29:58,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-22 15:29:58,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-22 15:29:58,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-22 15:29:58,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:58,128 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-22 15:29:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-22 15:29:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-22 15:29:58,131 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) [2021-11-22 15:29:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-22 15:29:58,131 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-22 15:29:58,131 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-22 15:29:58,132 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-22 15:29:58,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2021-11-22 15:29:58,132 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-22 15:29:58,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:58,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:58,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:29:58,134 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:58,144 INFO L791 eck$LassoCheckResult]: Stem: 1294#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1264#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 1265#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1298#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1269#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 1270#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1271#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1272#L47-3 assume !false; 1296#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1282#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1283#L47-3 assume !false; 1295#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1276#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1285#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#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; 1289#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1260#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1261#L80-2 main_#t~ret10#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret10#1;havoc main_#t~ret10#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; 1297#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1266#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1267#L57-11 [2021-11-22 15:29:58,144 INFO L793 eck$LassoCheckResult]: Loop: 1267#L57-11 assume !false; 1273#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 1274#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1267#L57-11 [2021-11-22 15:29:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2021-11-22 15:29:58,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:58,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100445873] [2021-11-22 15:29:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:58,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:58,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100445873] [2021-11-22 15:29:58,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100445873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:29:58,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061491132] [2021-11-22 15:29:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:58,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:29:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:58,209 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:29:58,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-22 15:29:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:58,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:58,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:58,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:29:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:58,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061491132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:29:58,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:29:58,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:29:58,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509356191] [2021-11-22 15:29:58,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:29:58,353 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2021-11-22 15:29:58,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:58,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549649931] [2021-11-22 15:29:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:58,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:58,381 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:58,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:58,422 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:58,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:58,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:58,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:58,423 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:58,423 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:58,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:58,423 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-11-22 15:29:58,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:58,424 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:58,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:58,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:58,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:58,492 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:58,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:58,493 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:58,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:58,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:58,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-22 15:29:58,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:58,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:58,555 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:58,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:58,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:58,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-22 15:29:58,621 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:58,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:58,628 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:58,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:58,628 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:58,628 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:58,628 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:58,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:58,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:58,628 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-11-22 15:29:58,628 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:58,628 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:58,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:58,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:58,700 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:58,700 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:58,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:58,709 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:58,724 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 [2021-11-22 15:29:58,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:58,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:58,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:58,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:58,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:58,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:58,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:58,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-22 15:29:58,745 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:58,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:58,758 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:58,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:58,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:58,762 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:58,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:58,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:58,764 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:58,764 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-22 15:29:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-22 15:29:58,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-11-22 15:29:58,796 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:58,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:58,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:58,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:58,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:58,907 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 [2021-11-22 15:29:58,908 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) [2021-11-22 15:29:58,920 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. [2021-11-22 15:29:58,921 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 [2021-11-22 15:29:58,922 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) [2021-11-22 15:29:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2021-11-22 15:29:58,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2021-11-22 15:29:58,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2021-11-22 15:29:58,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2021-11-22 15:29:58,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:58,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-11-22 15:29:58,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-22 15:29:58,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2021-11-22 15:29:58,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-11-22 15:29:58,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-11-22 15:29:58,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2021-11-22 15:29:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:58,927 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-22 15:29:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2021-11-22 15:29:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-22 15:29:58,940 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) [2021-11-22 15:29:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-11-22 15:29:58,940 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-22 15:29:58,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:29:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:29:58,942 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) [2021-11-22 15:29:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:58,998 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-11-22 15:29:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:29:58,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 74 transitions. [2021-11-22 15:29:59,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-22 15:29:59,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 56 states and 68 transitions. [2021-11-22 15:29:59,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-11-22 15:29:59,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-11-22 15:29:59,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 68 transitions. [2021-11-22 15:29:59,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-22 15:29:59,001 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-11-22 15:29:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 68 transitions. [2021-11-22 15:29:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-11-22 15:29:59,003 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) [2021-11-22 15:29:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-22 15:29:59,003 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-22 15:29:59,003 INFO L587 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-22 15:29:59,003 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-22 15:29:59,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2021-11-22 15:29:59,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-22 15:29:59,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:29:59,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:29:59,005 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] [2021-11-22 15:29:59,005 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-22 15:29:59,005 INFO L791 eck$LassoCheckResult]: Stem: 1677#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);call #Ultimate.allocInit(12, 3); 1651#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#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_~sa~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~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sa~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; 1652#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1681#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1655#L80 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#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; 1656#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1657#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1658#L47-3 assume !false; 1679#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1666#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1667#L47-3 assume !false; 1684#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1692#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1659#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; 1660#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1668#L80-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret9#1;havoc main_#t~ret9#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; 1672#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1647#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1648#L80-2 main_#t~ret10#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret10#1;havoc main_#t~ret10#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; 1680#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1653#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 1654#L47-7 [2021-11-22 15:29:59,005 INFO L793 eck$LassoCheckResult]: Loop: 1654#L47-7 assume !false; 1649#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1650#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 1654#L47-7 [2021-11-22 15:29:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2021-11-22 15:29:59,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:59,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632778917] [2021-11-22 15:29:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:59,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:59,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:59,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:59,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:59,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632778917] [2021-11-22 15:29:59,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632778917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:29:59,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685563711] [2021-11-22 15:29:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:59,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:29:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:59,181 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:29:59,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-22 15:29:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:59,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:29:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:59,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:29:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:59,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685563711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:29:59,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:29:59,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-22 15:29:59,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954013629] [2021-11-22 15:29:59,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:29:59,408 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:29:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2021-11-22 15:29:59,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930140927] [2021-11-22 15:29:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:59,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:59,414 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:29:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:29:59,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:29:59,454 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:59,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:59,454 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:59,454 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:59,454 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-22 15:29:59,454 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:59,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:59,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-11-22 15:29:59,455 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:59,455 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:59,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:59,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:59,515 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:59,516 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-22 15:29:59,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:59,517 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:59,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-22 15:29:59,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:59,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-22 15:29:59,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:59,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:59,589 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:59,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-22 15:29:59,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-22 15:29:59,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-22 15:29:59,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-22 15:29:59,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:59,656 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:29:59,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:29:59,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:29:59,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:29:59,656 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:29:59,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:29:59,656 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:29:59,656 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-11-22 15:29:59,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:29:59,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:29:59,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:59,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:29:59,707 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:29:59,708 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:29:59,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:59,709 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:59,719 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 [2021-11-22 15:29:59,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:29:59,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:29:59,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:29:59,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:29:59,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:29:59,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:29:59,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:29:59,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-22 15:29:59,749 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:29:59,751 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-22 15:29:59,751 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-22 15:29:59,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:29:59,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:29:59,753 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:29:59,754 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:29:59,754 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-22 15:29:59,755 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:29:59,755 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-22 15:29:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-22 15:29:59,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-22 15:29:59,787 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-22 15:29:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:59,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:29:59,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:59,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:29:59,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:29:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:29:59,912 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 [2021-11-22 15:29:59,912 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) [2021-11-22 15:29:59,919 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. [2021-11-22 15:29:59,919 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 [2021-11-22 15:29:59,921 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) [2021-11-22 15:29:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-11-22 15:29:59,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2021-11-22 15:29:59,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:59,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2021-11-22 15:29:59,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:59,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2021-11-22 15:29:59,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:29:59,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 62 transitions. [2021-11-22 15:29:59,923 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:29:59,923 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 0 states and 0 transitions. [2021-11-22 15:29:59,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-22 15:29:59,923 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-22 15:29:59,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-22 15:29:59,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:29:59,924 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:29:59,924 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:29:59,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:29:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:29:59,925 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) [2021-11-22 15:29:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:59,925 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-22 15:29:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:29:59,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-22 15:29:59,926 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:29:59,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:29:59,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-22 15:29:59,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-22 15:29:59,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-22 15:29:59,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:29:59,927 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:29:59,927 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:29:59,927 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:29:59,928 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-22 15:29:59,928 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:29:59,928 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:29:59,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-22 15:29:59,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 03:29:59 BoogieIcfgContainer [2021-11-22 15:29:59,936 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-22 15:29:59,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:29:59,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:29:59,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:29:59,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:53" (3/4) ... [2021-11-22 15:29:59,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:29:59,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:29:59,941 INFO L158 Benchmark]: Toolchain (without parser) took 7222.89ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 76.3MB in the beginning and 59.1MB in the end (delta: 17.2MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,942 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:29:59,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.95ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 63.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.90ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 61.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,943 INFO L158 Benchmark]: Boogie Preprocessor took 77.32ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 60.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,944 INFO L158 Benchmark]: RCFGBuilder took 489.71ms. Allocated memory is still 104.9MB. Free memory was 59.9MB in the beginning and 44.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,944 INFO L158 Benchmark]: BuchiAutomizer took 6246.03ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 59.1MB in the end (delta: -15.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-22 15:29:59,944 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 125.8MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:29:59,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.95ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 63.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.90ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 61.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.32ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 60.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 489.71ms. Allocated memory is still 104.9MB. Free memory was 59.9MB in the beginning and 44.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 6246.03ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 59.1MB in the end (delta: -15.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 125.8MB. Free memory is still 59.1MB. 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 6.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.5s. Construction of modules took 0.2s. Büchi inclusion checks took 1.0s. 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, 368 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 529 mSDtfsCounter, 177 mSolverCounterSat, 0.0s 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: 37ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-22 15:29:59,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-22 15:30:00,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-22 15:30:00,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-22 15:30:00,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4ca4608-5e9b-46e1-86df-3a349ea4e3a6/bin/uautomizer-w2VwFs6gM0/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