./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt --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 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:19:40,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:19:40,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:19:40,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:19:40,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:19:40,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:19:40,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:19:40,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:19:40,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:19:40,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:19:40,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:19:40,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:19:40,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:19:40,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:19:40,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:19:40,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:19:40,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:19:40,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:19:40,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:19:40,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:19:40,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:19:40,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:19:40,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:19:40,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:19:40,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:19:40,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:19:40,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:19:40,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:19:40,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:19:40,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:19:40,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:19:40,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:19:40,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:19:40,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:19:40,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:19:40,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:19:40,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:19:40,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:19:40,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:19:40,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:19:40,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:19:40,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 01:19:40,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:19:40,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:19:40,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:19:40,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:19:40,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:19:40,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:19:40,538 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:19:40,539 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:19:40,539 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:19:40,539 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:19:40,540 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:19:40,540 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:19:40,541 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:19:40,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:19:40,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:19:40,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:19:40,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:19:40,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:19:40,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:19:40,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:19:40,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:19:40,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:19:40,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:19:40,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:19:40,544 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:19:40,544 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:19:40,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:19:40,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:19:40,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:19:40,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:19:40,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:19:40,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:19:40,547 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:19:40,548 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_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf [2021-10-13 01:19:40,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:19:40,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:19:40,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:19:40,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:19:40,876 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:19:40,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2021-10-13 01:19:40,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/data/2f2c6bd2c/61ab2160330b4e63b44c2c75f48a3793/FLAGe68b3dbca [2021-10-13 01:19:41,502 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:19:41,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2021-10-13 01:19:41,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/data/2f2c6bd2c/61ab2160330b4e63b44c2c75f48a3793/FLAGe68b3dbca [2021-10-13 01:19:41,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/data/2f2c6bd2c/61ab2160330b4e63b44c2c75f48a3793 [2021-10-13 01:19:41,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:19:41,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:19:41,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:19:41,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:19:41,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:19:41,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:19:41" (1/1) ... [2021-10-13 01:19:41,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3572a6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:41, skipping insertion in model container [2021-10-13 01:19:41,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:19:41" (1/1) ... [2021-10-13 01:19:41,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:19:42,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:19:42,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:19:42,364 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:19:42,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:19:42,462 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:19:42,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42 WrapperNode [2021-10-13 01:19:42,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:19:42,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:19:42,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:19:42,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:19:42,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:19:42,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:19:42,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:19:42,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:19:42,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:19:42,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:19:42,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:19:42,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:19:42,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (1/1) ... [2021-10-13 01:19:42,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:42,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:42,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:42,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:19:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 01:19:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 01:19:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:19:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 01:19:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2021-10-13 01:19:42,696 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2021-10-13 01:19:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:19:42,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:19:42,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:19:42,936 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 01:19:42,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:19:42 BoogieIcfgContainer [2021-10-13 01:19:42,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:19:42,939 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:19:42,939 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:19:42,949 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:19:42,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:19:42,950 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:19:41" (1/3) ... [2021-10-13 01:19:42,961 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c4dca5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:19:42, skipping insertion in model container [2021-10-13 01:19:42,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:19:42,962 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:19:42" (2/3) ... [2021-10-13 01:19:42,962 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c4dca5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:19:42, skipping insertion in model container [2021-10-13 01:19:42,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:19:42,963 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:19:42" (3/3) ... [2021-10-13 01:19:42,964 INFO L389 chiAutomizerObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2021-10-13 01:19:43,043 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:19:43,044 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:19:43,044 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:19:43,044 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:19:43,044 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:19:43,044 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:19:43,044 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:19:43,045 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:19:43,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 01:19:43,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:19:43,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:19:43,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:19:43,102 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:19:43,102 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 01:19:43,102 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:19:43,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 01:19:43,105 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-13 01:19:43,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:19:43,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:19:43,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:19:43,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 01:19:43,112 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 18#L522true assume !(main_~length1~0 < 1); 12#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 10#L527-3true [2021-10-13 01:19:43,112 INFO L793 eck$LassoCheckResult]: Loop: 10#L527-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 13#L527-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 10#L527-3true [2021-10-13 01:19:43,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:43,118 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-10-13 01:19:43,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:43,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937649462] [2021-10-13 01:19:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:43,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,277 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,346 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2021-10-13 01:19:43,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:43,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428004086] [2021-10-13 01:19:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:43,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,362 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,374 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2021-10-13 01:19:43,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:43,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380874957] [2021-10-13 01:19:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:43,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,403 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:43,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:43,772 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:19:43,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:19:43,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:19:43,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:19:43,773 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:19:43,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:43,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:19:43,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:19:43,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration1_Lasso [2021-10-13 01:19:43,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:19:43,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:19:43,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:43,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:44,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:19:44,196 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:19:44,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:19:44,215 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 [2021-10-13 01:19:44,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:44,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:19:44,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:44,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:44,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:44,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:19:44,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:19:44,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:44,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:44,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,290 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 [2021-10-13 01:19:44,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:44,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:19:44,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:44,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:44,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:44,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:19:44,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:19:44,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:19:44,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:44,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-13 01:19:44,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:19:44,336 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 [2021-10-13 01:19:44,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:44,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:44,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:44,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:44,352 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:19:44,352 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:19:44,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:44,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-10-13 01:19:44,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:19:44,438 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 [2021-10-13 01:19:44,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:44,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:19:44,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:44,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:44,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:44,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:19:44,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:19:44,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:44,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:19:44,488 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 [2021-10-13 01:19:44,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:44,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:44,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:44,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:44,508 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:19:44,509 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:19:44,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:19:44,571 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2021-10-13 01:19:44,571 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. [2021-10-13 01:19:44,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:44,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:44,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:19:44,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:19:44,644 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-13 01:19:44,645 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:19:44,645 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:19:44,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:44,702 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-10-13 01:19:44,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:44,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:19:44,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:19:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:44,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:19:44,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:19:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:19:44,848 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 [2021-10-13 01:19:44,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-13 01:19:44,918 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 34 states and 43 transitions. Complement of second has 9 states. [2021-10-13 01:19:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:19:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-13 01:19:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-10-13 01:19:44,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-13 01:19:44,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:44,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-13 01:19:44,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:44,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-13 01:19:44,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:44,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 43 transitions. [2021-10-13 01:19:44,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:19:44,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 15 transitions. [2021-10-13 01:19:44,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-13 01:19:44,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 01:19:44,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-10-13 01:19:44,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:19:44,949 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-13 01:19:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-10-13 01:19:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 01:19:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-13 01:19:44,974 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-13 01:19:44,974 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-13 01:19:44,974 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:19:44,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2021-10-13 01:19:44,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:19:44,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:19:44,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:19:44,976 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:19:44,976 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:19:44,977 INFO L791 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 122#L522 assume !(main_~length1~0 < 1); 113#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 114#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 121#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 119#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 117#strlen_recENTRY [2021-10-13 01:19:44,977 INFO L793 eck$LassoCheckResult]: Loop: 117#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 120#L515 assume !(0 == #t~mem2);havoc #t~mem2; 118#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 117#strlen_recENTRY [2021-10-13 01:19:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1806816568, now seen corresponding path program 1 times [2021-10-13 01:19:44,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:44,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042679293] [2021-10-13 01:19:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:44,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:44,995 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,014 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:45,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 1 times [2021-10-13 01:19:45,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:45,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289150134] [2021-10-13 01:19:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:45,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,023 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1952714549, now seen corresponding path program 1 times [2021-10-13 01:19:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:45,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204326317] [2021-10-13 01:19:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:45,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:45,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:19:45,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:19:45,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204326317] [2021-10-13 01:19:45,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204326317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:19:45,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:19:45,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 01:19:45,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928273207] [2021-10-13 01:19:45,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:19:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:19:45,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:19:45,437 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:19:45,572 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-13 01:19:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:19:45,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2021-10-13 01:19:45,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:19:45,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 15 transitions. [2021-10-13 01:19:45,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-13 01:19:45,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 01:19:45,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-10-13 01:19:45,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:19:45,579 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-13 01:19:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-10-13 01:19:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 01:19:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-13 01:19:45,584 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-13 01:19:45,584 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-13 01:19:45,584 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:19:45,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2021-10-13 01:19:45,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 01:19:45,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:19:45,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:19:45,589 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:19:45,589 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 01:19:45,590 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 160#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 170#L522 assume !(main_~length1~0 < 1); 161#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 162#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 163#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 164#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 169#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 166#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 165#strlen_recENTRY [2021-10-13 01:19:45,590 INFO L793 eck$LassoCheckResult]: Loop: 165#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 168#L515 assume !(0 == #t~mem2);havoc #t~mem2; 167#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 165#strlen_recENTRY [2021-10-13 01:19:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:45,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1185641750, now seen corresponding path program 1 times [2021-10-13 01:19:45,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:45,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492446053] [2021-10-13 01:19:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:45,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,649 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 2 times [2021-10-13 01:19:45,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:45,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264311571] [2021-10-13 01:19:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:45,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,702 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,707 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:45,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:45,708 INFO L82 PathProgramCache]: Analyzing trace with hash -357639123, now seen corresponding path program 1 times [2021-10-13 01:19:45,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:19:45,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751665030] [2021-10-13 01:19:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:19:45,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:19:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,727 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:19:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:19:45,747 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:19:46,345 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:19:46,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:19:46,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:19:46,346 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:19:46,346 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:19:46,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:19:46,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:19:46,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration3_Lasso [2021-10-13 01:19:46,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:19:46,347 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:19:46,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:19:46,677 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:19:46,677 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:19:46,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:46,683 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:46,691 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 [2021-10-13 01:19:46,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:19:46,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:46,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:19:46,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:46,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:46,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:46,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:19:46,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:19:46,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:46,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:46,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:46,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:46,775 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 [2021-10-13 01:19:46,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:46,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:46,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:46,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:46,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:19:46,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:19:46,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:19:46,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:46,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:46,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:46,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:46,852 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 [2021-10-13 01:19:46,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:46,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:46,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:46,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:46,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:19:46,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:19:46,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:19:46,886 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:46,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:46,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:46,923 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:19:46,931 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 [2021-10-13 01:19:46,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:46,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:19:46,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:46,942 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-13 01:19:46,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:46,943 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-13 01:19:46,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:19:46,954 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:19:46,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:46,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:46,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:47,008 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 [2021-10-13 01:19:47,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:19:47,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:19:47,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:19:47,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:19:47,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:19:47,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:19:47,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:19:47,051 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:19:47,072 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2021-10-13 01:19:47,072 INFO L444 ModelExtractionUtils]: 0 out of 10 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-10-13 01:19:47,072 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:19:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:19:47,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:19:47,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:19:47,078 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:19:47,087 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-13 01:19:47,087 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:19:47,088 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(strlen_rec_#in~p.offset, v_rep(select #length strlen_rec_#in~p.base)_1) = -1*strlen_rec_#in~p.offset + 1*v_rep(select #length strlen_rec_#in~p.base)_1 Supporting invariants [] [2021-10-13 01:19:47,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:47,115 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2021-10-13 01:19:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:19:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:47,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:19:47,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:19:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:19:47,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:19:47,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:19:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:19:47,258 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 [2021-10-13 01:19:47,258 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:47,290 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 21 transitions. Complement of second has 7 states. [2021-10-13 01:19:47,290 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 [2021-10-13 01:19:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:19:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-10-13 01:19:47,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2021-10-13 01:19:47,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:47,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2021-10-13 01:19:47,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:47,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2021-10-13 01:19:47,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:19:47,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-10-13 01:19:47,295 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:19:47,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2021-10-13 01:19:47,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:19:47,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:19:47,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:19:47,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:19:47,296 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:19:47,296 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:19:47,296 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:19:47,296 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:19:47,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:19:47,297 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:19:47,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 01:19:47,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:19:47 BoogieIcfgContainer [2021-10-13 01:19:47,304 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:19:47,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:19:47,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:19:47,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:19:47,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:19:42" (3/4) ... [2021-10-13 01:19:47,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:19:47,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:19:47,311 INFO L168 Benchmark]: Toolchain (without parser) took 5355.21 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.5 MB in the beginning and 38.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:19:47,312 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:19:47,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.55 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 76.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:19:47,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.23 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 75.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:19:47,314 INFO L168 Benchmark]: Boogie Preprocessor took 40.86 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 74.1 MB in the end (delta: 998.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:19:47,315 INFO L168 Benchmark]: RCFGBuilder took 339.66 ms. Allocated memory is still 107.0 MB. Free memory was 74.1 MB in the beginning and 64.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:19:47,315 INFO L168 Benchmark]: BuchiAutomizer took 4364.99 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 39.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:19:47,316 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 107.0 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:19:47,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 494.55 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 76.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.23 ms. Allocated memory is still 107.0 MB. Free memory was 76.7 MB in the beginning and 75.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.86 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 74.1 MB in the end (delta: 998.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 339.66 ms. Allocated memory is still 107.0 MB. Free memory was 74.1 MB in the beginning and 64.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4364.99 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 39.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 107.0 MB. Free memory is still 38.9 MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[p] and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 13.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 21 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital93 mio100 ax119 hnf100 lsp78 ukn72 mio100 lsp58 div100 bol100 ite100 ukn100 eq164 hnf91 smp100 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 62ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 01:19:47,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:19:47,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9848a427-7af9-484e-abe4-5c14abc9de2d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...