./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 03:19:43,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:19:43,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:19:43,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:19:43,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:19:43,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:19:43,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:19:43,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:19:43,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:19:43,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:19:43,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:19:43,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:19:43,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:19:43,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:19:43,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:19:43,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:19:43,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:19:43,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:19:43,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:19:43,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:19:43,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:19:43,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:19:43,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:19:43,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:19:43,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:19:43,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:19:43,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:19:43,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:19:43,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:19:43,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:19:43,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:19:43,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:19:43,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:19:43,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:19:43,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:19:43,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:19:43,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:19:43,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:19:43,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:19:43,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:19:43,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:19:43,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 03:19:43,513 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:19:43,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:19:43,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:19:43,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:19:43,515 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:19:43,515 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 03:19:43,515 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 03:19:43,515 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 03:19:43,515 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 03:19:43,516 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 03:19:43,516 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 03:19:43,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:19:43,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:19:43,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:19:43,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:19:43,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:19:43,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:19:43,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 03:19:43,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 03:19:43,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 03:19:43,519 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:19:43,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:19:43,519 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 03:19:43,519 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:19:43,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 03:19:43,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:19:43,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:19:43,520 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 03:19:43,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:19:43,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:19:43,521 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 03:19:43,522 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 03:19:43,522 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf [2019-11-20 03:19:43,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:19:43,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:19:43,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:19:43,678 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:19:43,678 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:19:43,679 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2019-11-20 03:19:43,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/data/9f31bd6a3/c0b774c80a9d404ea596ecfa46ac9fee/FLAGf83d40887 [2019-11-20 03:19:44,199 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:19:44,199 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2019-11-20 03:19:44,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/data/9f31bd6a3/c0b774c80a9d404ea596ecfa46ac9fee/FLAGf83d40887 [2019-11-20 03:19:44,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/data/9f31bd6a3/c0b774c80a9d404ea596ecfa46ac9fee [2019-11-20 03:19:44,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:19:44,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:19:44,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:19:44,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:19:44,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:19:44,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:19:44" (1/1) ... [2019-11-20 03:19:44,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674759fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:44, skipping insertion in model container [2019-11-20 03:19:44,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:19:44" (1/1) ... [2019-11-20 03:19:44,535 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:19:44,590 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:19:44,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:19:44,958 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:19:44,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:19:45,043 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:19:45,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45 WrapperNode [2019-11-20 03:19:45,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:19:45,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:19:45,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:19:45,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:19:45,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:19:45,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:19:45,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:19:45,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:19:45,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... [2019-11-20 03:19:45,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:19:45,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:19:45,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:19:45,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:19:45,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 03:19:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 03:19:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:19:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:19:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2019-11-20 03:19:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2019-11-20 03:19:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:19:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:19:45,408 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:19:45,409 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 03:19:45,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:19:45 BoogieIcfgContainer [2019-11-20 03:19:45,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:19:45,410 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 03:19:45,410 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 03:19:45,413 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 03:19:45,413 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:19:45,413 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 03:19:44" (1/3) ... [2019-11-20 03:19:45,414 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e25f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:19:45, skipping insertion in model container [2019-11-20 03:19:45,414 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:19:45,414 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:19:45" (2/3) ... [2019-11-20 03:19:45,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e25f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:19:45, skipping insertion in model container [2019-11-20 03:19:45,415 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:19:45,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:19:45" (3/3) ... [2019-11-20 03:19:45,416 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2019-11-20 03:19:45,452 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 03:19:45,453 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 03:19:45,453 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 03:19:45,453 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:19:45,453 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:19:45,453 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 03:19:45,453 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:19:45,453 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 03:19:45,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-20 03:19:45,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 03:19:45,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:19:45,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:19:45,493 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 03:19:45,494 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:19:45,494 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 03:19:45,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-20 03:19:45,496 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 03:19:45,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:19:45,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:19:45,496 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 03:19:45,496 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:19:45,503 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 11#L522true assume !(main_~length1~0 < 1); 16#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L527-3true [2019-11-20 03:19:45,504 INFO L796 eck$LassoCheckResult]: Loop: 5#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; 4#L527-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5#L527-3true [2019-11-20 03:19:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-20 03:19:45,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:45,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742103214] [2019-11-20 03:19:45,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,624 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2019-11-20 03:19:45,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:45,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200935913] [2019-11-20 03:19:45,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,643 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2019-11-20 03:19:45,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:45,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287354735] [2019-11-20 03:19:45,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:45,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:45,879 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-20 03:19:45,936 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:19:45,938 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:19:45,938 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:19:45,938 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:19:45,938 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:19:45,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:45,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:19:45,939 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:19:45,939 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration1_Lasso [2019-11-20 03:19:45,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:19:45,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:19:45,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:45,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:46,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:46,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:46,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:46,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:19:46,428 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,450 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:46,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:46,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,460 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:46,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:46,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:46,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:46,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:46,517 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,543 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,545 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,550 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,564 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,581 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,613 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,627 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,632 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,632 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:19:46,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,657 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,662 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,662 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,668 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:46,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:46,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,685 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:46,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:46,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:46,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,737 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,754 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:46,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:46,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:46,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:46,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:46,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:46,769 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:19:46,784 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:19:46,936 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-11-20 03:19:46,937 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:46,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:19:46,952 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:19:46,953 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:19:46,953 INFO L512 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 [] [2019-11-20 03:19:46,971 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 03:19:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:19:47,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:19:47,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:19:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:19:47,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:19:47,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:19:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:19:47,072 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 [2019-11-20 03:19:47,073 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-11-20 03:19:47,135 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 34 states and 43 transitions. Complement of second has 9 states. [2019-11-20 03:19:47,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 03:19:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:19:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-20 03:19:47,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 03:19:47,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:47,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 03:19:47,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:47,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 03:19:47,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:47,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 43 transitions. [2019-11-20 03:19:47,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:19:47,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 15 transitions. [2019-11-20 03:19:47,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 03:19:47,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 03:19:47,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2019-11-20 03:19:47,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:19:47,160 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-20 03:19:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2019-11-20 03:19:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 03:19:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:19:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-20 03:19:47,188 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-20 03:19:47,188 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-20 03:19:47,188 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 03:19:47,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2019-11-20 03:19:47,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:19:47,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:19:47,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:19:47,191 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:19:47,191 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:19:47,192 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 111#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 112#L522 assume !(main_~length1~0 < 1); 118#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 119#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 122#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 114#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 115#strlen_recENTRY [2019-11-20 03:19:47,192 INFO L796 eck$LassoCheckResult]: Loop: 115#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 117#L515 assume !(0 == #t~mem2);havoc #t~mem2; 113#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 115#strlen_recENTRY [2019-11-20 03:19:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1806816568, now seen corresponding path program 1 times [2019-11-20 03:19:47,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300085720] [2019-11-20 03:19:47,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,257 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 1 times [2019-11-20 03:19:47,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571450018] [2019-11-20 03:19:47,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,275 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1952714549, now seen corresponding path program 1 times [2019-11-20 03:19:47,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448820724] [2019-11-20 03:19:47,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:19:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:19:47,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448820724] [2019-11-20 03:19:47,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:19:47,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:19:47,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294486342] [2019-11-20 03:19:47,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:19:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:19:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:19:47,609 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 8 states. [2019-11-20 03:19:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:19:47,735 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-20 03:19:47,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 03:19:47,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2019-11-20 03:19:47,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:19:47,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 15 transitions. [2019-11-20 03:19:47,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 03:19:47,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 03:19:47,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2019-11-20 03:19:47,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:19:47,738 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 03:19:47,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2019-11-20 03:19:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-20 03:19:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:19:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-20 03:19:47,740 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 03:19:47,740 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 03:19:47,740 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 03:19:47,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2019-11-20 03:19:47,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:19:47,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:19:47,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:19:47,741 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:19:47,741 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:19:47,741 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 157#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 158#L522 assume !(main_~length1~0 < 1); 164#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 165#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 166#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 167#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 168#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 160#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 161#strlen_recENTRY [2019-11-20 03:19:47,741 INFO L796 eck$LassoCheckResult]: Loop: 161#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 163#L515 assume !(0 == #t~mem2);havoc #t~mem2; 159#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 161#strlen_recENTRY [2019-11-20 03:19:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1185641750, now seen corresponding path program 1 times [2019-11-20 03:19:47,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29155234] [2019-11-20 03:19:47,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,783 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 2 times [2019-11-20 03:19:47,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517717771] [2019-11-20 03:19:47,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash -357639123, now seen corresponding path program 1 times [2019-11-20 03:19:47,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:19:47,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906289074] [2019-11-20 03:19:47,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:19:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:19:47,857 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:19:48,133 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-11-20 03:19:48,299 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:19:48,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:19:48,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:19:48,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:19:48,300 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:19:48,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:19:48,300 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:19:48,300 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration3_Lasso [2019-11-20 03:19:48,300 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:19:48,300 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:19:48,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:19:48,645 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:19:48,646 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,658 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,695 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,711 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,722 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:48,722 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:19:48,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,744 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,753 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,757 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,762 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:19:48,766 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,789 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,797 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:48,797 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:19:48,801 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,841 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,845 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:19:48,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,872 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:19:48,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,874 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 03:19:48,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,876 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 03:19:48,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,878 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,889 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:48,889 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,892 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:48,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:19:48,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:19:48,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:19:48,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:19:48,916 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:19:48,921 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:19:48,921 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,928 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:19:48,946 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-11-20 03:19:48,947 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1280c4bf-8d6d-4fe9-a31e-b19d55894f76/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:19:48,950 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:19:48,953 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:19:48,953 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:19:48,953 INFO L512 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 [] [2019-11-20 03:19:48,958 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2019-11-20 03:19:48,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 03:19:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:19:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:19:48,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:19:48,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:19:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:19:49,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 03:19:49,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:19:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:19:49,043 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 [2019-11-20 03:19:49,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-20 03:19:49,070 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 21 transitions. Complement of second has 7 states. [2019-11-20 03:19:49,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:19:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:19:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-11-20 03:19:49,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 03:19:49,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:49,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 03:19:49,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:49,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-20 03:19:49,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:19:49,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2019-11-20 03:19:49,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:19:49,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2019-11-20 03:19:49,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 03:19:49,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 03:19:49,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 03:19:49,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:19:49,075 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:19:49,075 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:19:49,075 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:19:49,076 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 03:19:49,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 03:19:49,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:19:49,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 03:19:49,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 03:19:49 BoogieIcfgContainer [2019-11-20 03:19:49,085 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 03:19:49,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:19:49,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:19:49,086 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:19:49,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:19:45" (3/4) ... [2019-11-20 03:19:49,090 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:19:49,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:19:49,092 INFO L168 Benchmark]: Toolchain (without parser) took 4569.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 944.8 MB in the beginning and 977.0 MB in the end (delta: -32.2 MB). Peak memory consumption was 171.2 MB. Max. memory is 11.5 GB. [2019-11-20 03:19:49,093 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:19:49,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -241.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:19:49,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:19:49,099 INFO L168 Benchmark]: Boogie Preprocessor took 26.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:19:49,100 INFO L168 Benchmark]: RCFGBuilder took 295.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:19:49,101 INFO L168 Benchmark]: BuchiAutomizer took 3674.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 977.0 MB in the end (delta: 185.3 MB). Peak memory consumption was 185.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:19:49,101 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 1.2 GB. Free memory is still 977.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:19:49,110 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 521.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -241.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 295.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3674.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 977.0 MB in the end (delta: 185.3 MB). Peak memory consumption was 185.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.90 ms. Allocated memory is still 1.2 GB. Free memory is still 977.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * 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 3.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s 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, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital97 mio100 ax118 hnf99 lsp79 ukn71 mio100 lsp59 div100 bol100 ite100 ukn100 eq155 hnf92 smp96 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 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! Received shutdown request...