./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:40:21,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:40:21,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:40:21,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:40:21,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:40:21,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:40:21,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:40:21,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:40:21,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:40:21,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:40:21,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:40:21,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:40:21,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:40:21,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:40:21,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:40:21,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:40:21,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:40:21,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:40:21,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:40:21,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:40:21,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:40:21,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:40:21,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:40:21,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:40:21,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:40:21,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:40:21,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:40:21,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:40:21,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:40:21,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:40:21,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:40:21,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:40:21,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:40:21,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:40:21,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:40:21,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:40:21,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:40:21,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:40:21,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:40:21,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:40:21,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:40:21,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:40:21,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:40:21,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:40:21,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:40:21,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:40:21,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:40:21,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:40:21,445 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:40:21,445 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:40:21,445 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:40:21,445 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:40:21,446 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:40:21,446 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:40:21,446 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:40:21,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:40:21,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:40:21,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:40:21,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:40:21,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:40:21,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:40:21,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:40:21,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:40:21,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:40:21,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:40:21,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:40:21,449 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:40:21,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:40:21,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:40:21,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:40:21,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:40:21,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:40:21,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:40:21,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:40:21,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:40:21,453 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_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-28 08:40:21,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:40:21,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:40:21,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:40:21,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:40:21,773 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:40:21,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 08:40:21,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/data/f2b0dff6c/ece0543525414f9e959ad52a07cd46ca/FLAGb0d8cabb7 [2021-10-28 08:40:22,349 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:40:22,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 08:40:22,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/data/f2b0dff6c/ece0543525414f9e959ad52a07cd46ca/FLAGb0d8cabb7 [2021-10-28 08:40:22,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/data/f2b0dff6c/ece0543525414f9e959ad52a07cd46ca [2021-10-28 08:40:22,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:40:22,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:40:22,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:40:22,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:40:22,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:40:22,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:40:22" (1/1) ... [2021-10-28 08:40:22,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbeb6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:22, skipping insertion in model container [2021-10-28 08:40:22,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:40:22" (1/1) ... [2021-10-28 08:40:22,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:40:22,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:40:22,954 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 08:40:22,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:40:22,983 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:40:22,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 08:40:23,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:40:23,017 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:40:23,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23 WrapperNode [2021-10-28 08:40:23,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:40:23,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:40:23,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:40:23,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:40:23,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:40:23,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:40:23,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:40:23,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:40:23,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:40:23,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:40:23,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:40:23,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:40:23,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (1/1) ... [2021-10-28 08:40:23,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:23,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:23,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:23,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:40:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:40:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:40:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:40:23,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:40:23,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:40:23,414 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:40:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:23 BoogieIcfgContainer [2021-10-28 08:40:23,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:40:23,418 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:40:23,418 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:40:23,423 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:40:23,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:40:23,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:40:22" (1/3) ... [2021-10-28 08:40:23,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e4c7275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:40:23, skipping insertion in model container [2021-10-28 08:40:23,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:40:23,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:40:23" (2/3) ... [2021-10-28 08:40:23,427 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e4c7275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:40:23, skipping insertion in model container [2021-10-28 08:40:23,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:40:23,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:23" (3/3) ... [2021-10-28 08:40:23,429 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2021-10-28 08:40:23,485 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:40:23,485 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:40:23,486 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:40:23,486 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:40:23,486 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:40:23,486 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:40:23,487 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:40:23,487 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:40:23,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 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) [2021-10-28 08:40:23,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 08:40:23,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:40:23,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:40:23,536 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 08:40:23,536 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:40:23,537 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:40:23,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 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) [2021-10-28 08:40:23,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 08:40:23,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:40:23,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:40:23,540 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 08:40:23,540 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:40:23,548 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 7#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 6#L29true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 5#L30true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 9#L31-3true [2021-10-28 08:40:23,549 INFO L793 eck$LassoCheckResult]: Loop: 9#L31-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 13#L32-3true assume !true; 15#L31-2true main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 9#L31-3true [2021-10-28 08:40:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:23,556 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-10-28 08:40:23,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:23,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223305065] [2021-10-28 08:40:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:23,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,675 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 50037, now seen corresponding path program 1 times [2021-10-28 08:40:23,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:23,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001451408] [2021-10-28 08:40:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:23,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:23,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:23,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001451408] [2021-10-28 08:40:23,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001451408] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:23,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:23,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:40:23,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169808751] [2021-10-28 08:40:23,822 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:40:23,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:40:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:40:23,869 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-28 08:40:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:23,877 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-28 08:40:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:40:23,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-28 08:40:23,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 08:40:23,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 8 states and 9 transitions. [2021-10-28 08:40:23,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 08:40:23,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 08:40:23,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-28 08:40:23,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:40:23,887 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 08:40:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-28 08:40:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 08:40:23,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2021-10-28 08:40:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 08:40:23,917 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 08:40:23,917 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 08:40:23,918 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:40:23,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-10-28 08:40:23,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-28 08:40:23,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:40:23,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:40:23,921 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 08:40:23,922 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 08:40:23,922 INFO L791 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 45#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 42#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 43#L31-3 [2021-10-28 08:40:23,923 INFO L793 eck$LassoCheckResult]: Loop: 43#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 39#L32-3 assume !(main_~j~0 < main_~m~0); 44#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 43#L31-3 [2021-10-28 08:40:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2021-10-28 08:40:23,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:23,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282710278] [2021-10-28 08:40:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:23,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,963 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash 49851, now seen corresponding path program 1 times [2021-10-28 08:40:23,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:23,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762874818] [2021-10-28 08:40:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:23,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,992 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:23,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:23,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910836, now seen corresponding path program 1 times [2021-10-28 08:40:24,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:24,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805622035] [2021-10-28 08:40:24,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:24,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:24,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:24,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805622035] [2021-10-28 08:40:24,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805622035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:24,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:24,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:40:24,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095339956] [2021-10-28 08:40:24,189 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:24,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:24,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:24,190 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:24,190 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:40:24,190 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,190 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:24,190 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:24,190 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-10-28 08:40:24,191 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:24,191 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:24,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,342 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:24,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:40:24,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:40:24,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:24,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:40:24,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:40:24,416 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:40:24,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:24,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:40:24,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:40:24,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:24,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:24,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:40:24,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:40:24,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:24,706 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:40:24,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:24,737 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:24,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:24,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:24,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:24,738 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:40:24,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:24,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:24,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2021-10-28 08:40:24,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:24,739 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:24,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:24,831 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:24,839 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:40:24,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,849 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 [2021-10-28 08:40:24,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:40:24,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:40:24,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:40:24,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:40:24,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:40:24,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:40:24,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:40:24,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:40:24,876 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:40:24,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:24,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,924 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 [2021-10-28 08:40:24,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:40:24,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:40:24,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:40:24,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:40:24,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:40:24,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:40:24,938 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:40:24,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:40:24,955 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:40:24,968 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:40:24,968 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:40:24,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:24,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:24,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:40:24,982 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:40:24,983 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:40:24,983 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 08:40:24,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:40:25,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:25,017 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:40:25,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:25,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:40:25,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:25,145 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:25,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:25,192 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 [2021-10-28 08:40:25,193 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 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) [2021-10-28 08:40:25,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. 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 13 states and 17 transitions. Complement of second has 4 states. [2021-10-28 08:40:25,224 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 [2021-10-28 08:40:25,224 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) [2021-10-28 08:40:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 08:40:25,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 08:40:25,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:25,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-28 08:40:25,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:25,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-28 08:40:25,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:25,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-10-28 08:40:25,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 08:40:25,230 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 15 transitions. [2021-10-28 08:40:25,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 08:40:25,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 08:40:25,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-10-28 08:40:25,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:40:25,232 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 08:40:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-10-28 08:40:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-28 08:40:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-28 08:40:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-28 08:40:25,234 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-28 08:40:25,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:40:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:40:25,236 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-10-28 08:40:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:25,264 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-28 08:40:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:40:25,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-10-28 08:40:25,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 08:40:25,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2021-10-28 08:40:25,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-28 08:40:25,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-28 08:40:25,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2021-10-28 08:40:25,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:40:25,268 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-28 08:40:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2021-10-28 08:40:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2021-10-28 08:40:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 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) [2021-10-28 08:40:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-28 08:40:25,271 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 08:40:25,271 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-28 08:40:25,271 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:40:25,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-10-28 08:40:25,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 08:40:25,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:40:25,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:40:25,273 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 08:40:25,273 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 08:40:25,274 INFO L791 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 133#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 137#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 134#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 135#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 129#L32-3 [2021-10-28 08:40:25,274 INFO L793 eck$LassoCheckResult]: Loop: 129#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 128#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 129#L32-3 [2021-10-28 08:40:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 28695852, now seen corresponding path program 1 times [2021-10-28 08:40:25,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:25,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644448932] [2021-10-28 08:40:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:25,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,309 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 1 times [2021-10-28 08:40:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623907995] [2021-10-28 08:40:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:25,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,316 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,322 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:25,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910894, now seen corresponding path program 1 times [2021-10-28 08:40:25,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:25,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383964134] [2021-10-28 08:40:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:25,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,396 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:25,413 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:25,436 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:25,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:25,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:25,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:25,437 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:40:25,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:25,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:25,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-10-28 08:40:25,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:25,438 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:25,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 08:40:25,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,506 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:25,507 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:40:25,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:25,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:25,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:40:25,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:40:25,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:25,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-28 08:40:25,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:25,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:25,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:40:25,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:40:25,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:25,779 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:40:25,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:25,782 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:25,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:25,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:25,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:25,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:40:25,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:25,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:25,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2021-10-28 08:40:25,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:25,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:25,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:25,849 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:25,850 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:40:25,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:25,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:25,857 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 [2021-10-28 08:40:25,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:40:25,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:40:25,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:40:25,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:40:25,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:40:25,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:40:25,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:40:25,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:40:25,881 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:40:25,899 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:40:25,899 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:40:25,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:25,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:25,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:40:25,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:40:25,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:40:25,912 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:40:25,912 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 08:40:25,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:25,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:40:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:25,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:40:25,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:26,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:26,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:26,060 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 [2021-10-28 08:40:26,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 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) [2021-10-28 08:40:26,095 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. 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 24 states and 31 transitions. Complement of second has 7 states. [2021-10-28 08:40:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:40:26,096 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) [2021-10-28 08:40:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 08:40:26,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 08:40:26,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:26,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-28 08:40:26,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:26,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 08:40:26,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:26,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-10-28 08:40:26,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 08:40:26,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 17 states and 21 transitions. [2021-10-28 08:40:26,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-28 08:40:26,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-28 08:40:26,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2021-10-28 08:40:26,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:40:26,107 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-28 08:40:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2021-10-28 08:40:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-28 08:40:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-10-28 08:40:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-28 08:40:26,113 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 08:40:26,113 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-28 08:40:26,113 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:40:26,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-10-28 08:40:26,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 08:40:26,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:40:26,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:40:26,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:26,118 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 08:40:26,125 INFO L791 eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 214#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 218#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 215#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 216#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 217#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 211#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 212#L32-3 assume !(main_~j~0 < main_~m~0); 219#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 220#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 210#L32-3 [2021-10-28 08:40:26,125 INFO L793 eck$LassoCheckResult]: Loop: 210#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 209#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 210#L32-3 [2021-10-28 08:40:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 857348446, now seen corresponding path program 1 times [2021-10-28 08:40:26,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:26,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975001736] [2021-10-28 08:40:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:26,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:26,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:40:26,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975001736] [2021-10-28 08:40:26,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975001736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:40:26,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587276422] [2021-10-28 08:40:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:26,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:40:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:26,215 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:40:26,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 08:40:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:26,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:26,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:26,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587276422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:40:26,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:40:26,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 08:40:26,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308984783] [2021-10-28 08:40:26,404 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:40:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 2 times [2021-10-28 08:40:26,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:40:26,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753050242] [2021-10-28 08:40:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:26,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:40:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:26,416 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:40:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:40:26,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:40:26,457 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:26,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:26,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:26,458 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:26,458 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:40:26,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:26,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:26,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-10-28 08:40:26,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:26,459 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:26,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,515 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:26,515 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:40:26,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:26,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:26,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:40:26,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:26,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:40:26,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:26,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:26,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:26,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:40:26,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:40:26,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:40:26,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:26,885 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:40:26,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-10-28 08:40:26,888 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:40:26,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:40:26,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:40:26,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:40:26,889 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:40:26,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:40:26,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:40:26,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2021-10-28 08:40:26,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:40:26,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:40:26,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:40:26,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:40:26,945 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:40:26,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:26,946 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:26,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 08:40:26,955 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 [2021-10-28 08:40:26,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:40:26,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:40:26,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:40:26,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:40:26,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:40:26,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:40:26,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:40:26,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:40:26,973 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 08:40:26,973 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 08:40:26,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:40:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:40:26,979 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:40:26,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 08:40:26,983 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:40:26,983 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:40:26,983 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:40:26,983 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-28 08:40:27,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:27,008 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:40:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,083 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:27,104 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 [2021-10-28 08:40:27,104 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,121 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20 states and 25 transitions. Complement of second has 7 states. [2021-10-28 08:40:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:40:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 08:40:27,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-28 08:40:27,123 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:27,123 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:40:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,182 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:27,202 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:40:27,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,216 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 20 states and 25 transitions. Complement of second has 7 states. [2021-10-28 08:40:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:40:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-10-28 08:40:27,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-28 08:40:27,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:27,219 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:40:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:27,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:27,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:27,299 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 08:40:27,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,315 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 17 states and 21 transitions. Complement of second has 6 states. [2021-10-28 08:40:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 08:40:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-28 08:40:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-10-28 08:40:27,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-10-28 08:40:27,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:27,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-10-28 08:40:27,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:27,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-10-28 08:40:27,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:40:27,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-28 08:40:27,319 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:40:27,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2021-10-28 08:40:27,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:40:27,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:40:27,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:40:27,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:40:27,320 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:27,320 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:27,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:40:27,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:40:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:40:27,322 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-28 08:40:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:27,322 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 08:40:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:40:27,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 08:40:27,323 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:40:27,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:40:27,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:40:27,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:40:27,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:40:27,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:40:27,324 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:27,324 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:27,324 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:40:27,324 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:40:27,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:40:27,325 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:40:27,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 08:40:27,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:40:27 BoogieIcfgContainer [2021-10-28 08:40:27,332 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:40:27,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:40:27,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:40:27,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:40:27,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:40:23" (3/4) ... [2021-10-28 08:40:27,338 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:40:27,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:40:27,340 INFO L168 Benchmark]: Toolchain (without parser) took 4600.95 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 57.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:27,341 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 66.6 MB in the beginning and 66.6 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:40:27,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.80 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.0 MB in the beginning and 84.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:27,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:27,344 INFO L168 Benchmark]: Boogie Preprocessor took 26.32 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 987.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:40:27,345 INFO L168 Benchmark]: RCFGBuilder took 329.79 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 72.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:27,345 INFO L168 Benchmark]: BuchiAutomizer took 3914.43 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 58.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:40:27,346 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 57.8 MB in the end (delta: 570.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:40:27,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 66.6 MB in the beginning and 66.6 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.80 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.0 MB in the beginning and 84.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.32 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 987.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 329.79 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 72.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3914.43 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 58.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 107.0 MB. Free memory was 58.4 MB in the beginning and 57.8 MB in the end (delta: 570.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 3 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 63 SDtfs, 42 SDslu, 13 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 08:40:27,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:27,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-28 08:40:27,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89884b91-b6a8-4f68-bfeb-283f93152275/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...