./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 a9da884533d6d47d95abcc742a22337ea753025b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:20,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:56:20,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,658 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,658 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:20,659 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:20,659 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:20,660 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:20,660 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:20,660 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:20,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:20,662 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:20,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:20,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:20,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:20,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:20,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:20,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,664 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:20,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:20,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,666 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:20,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,667 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:20,668 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:20,668 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9da884533d6d47d95abcc742a22337ea753025b [2020-11-28 02:56:20,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:20,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:20,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:20,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:20,954 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:20,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2020-11-28 02:56:21,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/data/3e7adf21b/27e1d4dbc6b5482db21b7e126ea49296/FLAG33899ff80 [2020-11-28 02:56:21,512 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,518 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2020-11-28 02:56:21,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/data/3e7adf21b/27e1d4dbc6b5482db21b7e126ea49296/FLAG33899ff80 [2020-11-28 02:56:21,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/bin/uautomizer/data/3e7adf21b/27e1d4dbc6b5482db21b7e126ea49296 [2020-11-28 02:56:21,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:21,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:21,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:21,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:21,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:21,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291b5a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:21, skipping insertion in model container [2020-11-28 02:56:21,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:21,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,274 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,395 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:22,858 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:22,858 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 02:56:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22 BoogieIcfgContainer [2020-11-28 02:56:22,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:22,861 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:22,861 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:22,876 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:22,890 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,890 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:21" (1/3) ... [2020-11-28 02:56:22,892 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21133362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,892 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,892 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:22,893 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21133362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/3) ... [2020-11-28 02:56:22,894 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen-alloca-2.i [2020-11-28 02:56:22,951 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:22,951 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:22,952 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:22,952 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:22,952 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:22,952 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:22,952 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:22,952 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:22,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-28 02:56:22,987 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-28 02:56:22,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:22,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:22,993 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:22,993 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:22,993 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:22,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-28 02:56:22,997 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-28 02:56:22,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:22,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:22,998 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:22,998 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:23,005 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 11#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; 10#L522true assume !(main_~length1~0 < 1); 13#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 [2020-11-28 02:56:23,005 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 [2020-11-28 02:56:23,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,017 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-28 02:56:23,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469494586] [2020-11-28 02:56:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-11-28 02:56:23,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846794220] [2020-11-28 02:56:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,197 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,201 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-11-28 02:56:23,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248130454] [2020-11-28 02:56:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,553 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:23,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:23,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:23,554 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:23,554 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:23,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:23,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:23,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:23,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration1_Lasso [2020-11-28 02:56:23,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:23,555 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:23,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:23,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,032 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:24,036 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,050 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 [2020-11-28 02:56:24,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:24,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:24,059 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 [2020-11-28 02:56:24,062 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,100 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 [2020-11-28 02:56:24,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:24,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:24,103 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 [2020-11-28 02:56:24,114 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,154 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 [2020-11-28 02:56:24,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:24,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:24,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:24,162 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,206 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 [2020-11-28 02:56:24,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:24,213 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 [2020-11-28 02:56:24,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,249 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 [2020-11-28 02:56:24,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,255 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:24,255 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:24,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,303 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 [2020-11-28 02:56:24,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:24,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:24,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,308 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,342 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 [2020-11-28 02:56:24,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:24,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:24,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:24,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:24,356 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:24,356 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:24,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:24,559 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-28 02:56:24,559 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:24,565 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,568 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:24,568 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:24,569 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 [] [2020-11-28 02:56:24,615 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-28 02:56:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:56:24,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:24,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:24,721 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 [2020-11-28 02:56:24,722 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2020-11-28 02:56:24,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 7 states. [2020-11-28 02:56:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:56:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2020-11-28 02:56:24,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 02:56:24,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 02:56:24,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-28 02:56:24,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:24,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2020-11-28 02:56:24,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:24,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 10 states and 13 transitions. [2020-11-28 02:56:24,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 02:56:24,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 02:56:24,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-28 02:56:24,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:24,827 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 02:56:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-28 02:56:24,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:56:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:56:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-28 02:56:24,853 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 02:56:24,853 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 02:56:24,853 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:56:24,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-28 02:56:24,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:24,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:24,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:24,855 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:24,855 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:24,855 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 103#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; 104#L522 assume !(main_~length1~0 < 1); 108#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; 109#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 112#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 106#L516-3 [2020-11-28 02:56:24,855 INFO L796 eck$LassoCheckResult]: Loop: 106#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 105#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 106#L516-3 [2020-11-28 02:56:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,856 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2020-11-28 02:56:24,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462385232] [2020-11-28 02:56:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:24,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:24,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,886 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2020-11-28 02:56:24,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58796895] [2020-11-28 02:56:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:24,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:24,896 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:24,898 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,899 INFO L82 PathProgramCache]: Analyzing trace with hash 176738514, now seen corresponding path program 1 times [2020-11-28 02:56:24,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984509218] [2020-11-28 02:56:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:25,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984509218] [2020-11-28 02:56:25,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:25,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:25,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698695657] [2020-11-28 02:56:25,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:25,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:25,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:25,150 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 7 states. [2020-11-28 02:56:25,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,277 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-28 02:56:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:25,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-11-28 02:56:25,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:25,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 11 states and 13 transitions. [2020-11-28 02:56:25,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 02:56:25,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 02:56:25,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-11-28 02:56:25,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:25,280 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 02:56:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-11-28 02:56:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 02:56:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:56:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-28 02:56:25,283 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 02:56:25,284 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 02:56:25,284 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:56:25,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-11-28 02:56:25,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:25,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:25,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:25,290 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:25,290 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:25,290 INFO L794 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 145#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; 146#L522 assume !(main_~length1~0 < 1); 150#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; 151#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; 152#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 153#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 154#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 148#L516-3 [2020-11-28 02:56:25,291 INFO L796 eck$LassoCheckResult]: Loop: 148#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 147#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 148#L516-3 [2020-11-28 02:56:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2020-11-28 02:56:25,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512754448] [2020-11-28 02:56:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,319 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,343 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2020-11-28 02:56:25,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814169834] [2020-11-28 02:56:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,367 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811660, now seen corresponding path program 1 times [2020-11-28 02:56:25,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688927312] [2020-11-28 02:56:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:25,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:25,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:25,753 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-11-28 02:56:25,858 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:25,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:25,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:25,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:25,858 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:25,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:25,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:25,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:25,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration3_Lasso [2020-11-28 02:56:25,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:25,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:25,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:25,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,025 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-11-28 02:56:26,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:26,330 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-28 02:56:26,574 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:26,574 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,582 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 [2020-11-28 02:56:26,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,584 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,586 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:26,638 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 [2020-11-28 02:56:26,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,668 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 [2020-11-28 02:56:26,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,681 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:26,722 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:26,759 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 [2020-11-28 02:56:26,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,762 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,762 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,766 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:26,793 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 [2020-11-28 02:56:26,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,795 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,795 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,800 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:26,823 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 [2020-11-28 02:56:26,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:26,849 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 [2020-11-28 02:56:26,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,853 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,853 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,856 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:26,900 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 [2020-11-28 02:56:26,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,913 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,913 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:26,955 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 [2020-11-28 02:56:26,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,961 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,969 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,992 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 [2020-11-28 02:56:26,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,998 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:27,025 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 [2020-11-28 02:56:27,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:27,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:27,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:27,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:27,056 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:27,056 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:27,069 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:27,105 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-28 02:56:27,105 INFO L444 ModelExtractionUtils]: 19 out of 31 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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 [2020-11-28 02:56:27,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:56:27,109 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 02:56:27,110 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:27,110 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset) = -2*ULTIMATE.start_cstrlen_~p~0.offset + 3 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_cstrlen_~p~0.base)_1 + 2 >= 0] [2020-11-28 02:56:27,141 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-28 02:56:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,233 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-28 02:56:27,233 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:27,243 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:27,244 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:27,244 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:10 [2020-11-28 02:56:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,322 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:27,341 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-28 02:56:27,341 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2020-11-28 02:56:27,505 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 20 states and 24 transitions. Complement of second has 9 states. [2020-11-28 02:56:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2020-11-28 02:56:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:56:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-11-28 02:56:27,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-28 02:56:27,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-28 02:56:27,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-28 02:56:27,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2020-11-28 02:56:27,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:27,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2020-11-28 02:56:27,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-28 02:56:27,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 02:56:27,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2020-11-28 02:56:27,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:27,509 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 02:56:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2020-11-28 02:56:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-11-28 02:56:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-28 02:56:27,511 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 02:56:27,511 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 02:56:27,511 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:56:27,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-11-28 02:56:27,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:56:27,512 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:27,512 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:27,512 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:27,512 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:27,512 INFO L794 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 262#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; 263#L522 assume !(main_~length1~0 < 1); 267#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; 268#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; 269#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 270#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; 271#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 273#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 272#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 265#L516-3 [2020-11-28 02:56:27,512 INFO L796 eck$LassoCheckResult]: Loop: 265#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 264#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 265#L516-3 [2020-11-28 02:56:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1899756335, now seen corresponding path program 2 times [2020-11-28 02:56:27,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879154618] [2020-11-28 02:56:27,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,533 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2020-11-28 02:56:27,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581172691] [2020-11-28 02:56:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,544 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash -304736234, now seen corresponding path program 2 times [2020-11-28 02:56:27,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576998149] [2020-11-28 02:56:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,571 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:27,935 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-11-28 02:56:28,037 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:28,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:28,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:28,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:28,037 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:28,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:28,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:28,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration4_Lasso [2020-11-28 02:56:28,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:28,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:28,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,273 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-28 02:56:28,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:28,749 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:28,750 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,764 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 [2020-11-28 02:56:28,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,765 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:28,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:28,766 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:28,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,788 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 [2020-11-28 02:56:28,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:28,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:28,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:28,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,812 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 [2020-11-28 02:56:28,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:28,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:28,838 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,865 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 [2020-11-28 02:56:28,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,868 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:28,868 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:28,870 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,891 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 [2020-11-28 02:56:28,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:28,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:28,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:28,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,922 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 [2020-11-28 02:56:28,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,924 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:28,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:28,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:28,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,948 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 [2020-11-28 02:56:28,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,951 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:28,951 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:28,954 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,974 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 [2020-11-28 02:56:28,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:28,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:28,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:28,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:28,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:28,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:28,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:29,017 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 [2020-11-28 02:56:29,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:29,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:29,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:29,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:29,031 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:29,031 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:29,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:29,124 INFO L443 ModelExtractionUtils]: Simplification made 26 calls to the SMT solver. [2020-11-28 02:56:29,124 INFO L444 ModelExtractionUtils]: 6 out of 31 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0067d23b-a627-46eb-8525-3461dca4dd80/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) [2020-11-28 02:56:29,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:29,133 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:29,133 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:29,133 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2) = -1*ULTIMATE.start_cstrlen_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2 Supporting invariants [] [2020-11-28 02:56:29,195 INFO L297 tatePredicateManager]: 3 out of 5 supporting invariants were superfluous and have been removed [2020-11-28 02:56:29,208 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:56:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,290 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:56:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:29,314 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-28 02:56:29,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-11-28 02:56:29,360 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2020-11-28 02:56:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:56:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 02:56:29,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-28 02:56:29,361 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,361 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-28 02:56:29,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-28 02:56:29,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-11-28 02:56:29,363 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:29,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-11-28 02:56:29,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:56:29,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:56:29,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:56:29,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:29,363 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:29,364 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:29,364 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:29,364 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:56:29,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:29,364 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:29,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:56:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:29 BoogieIcfgContainer [2020-11-28 02:56:29,369 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:29,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:29,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:29,373 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:29,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/4) ... [2020-11-28 02:56:29,375 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:29,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:29,377 INFO L168 Benchmark]: Toolchain (without parser) took 7525.89 ms. Allocated memory was 92.3 MB in the beginning and 161.5 MB in the end (delta: 69.2 MB). Free memory was 62.8 MB in the beginning and 60.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 71.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:29,377 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 92.3 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:29,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.48 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 59.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:29,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 57.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:29,379 INFO L168 Benchmark]: Boogie Preprocessor took 37.66 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:29,379 INFO L168 Benchmark]: RCFGBuilder took 362.04 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 56.2 MB in the beginning and 87.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:29,380 INFO L168 Benchmark]: BuchiAutomizer took 6508.33 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 86.5 MB in the beginning and 60.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:29,380 INFO L168 Benchmark]: Witness Printer took 3.02 ms. Allocated memory is still 161.5 MB. Free memory is still 60.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:29,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 92.3 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 37.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.48 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 59.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 57.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.66 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 362.04 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 56.2 MB in the beginning and 87.0 MB in the end (delta: -30.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6508.33 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 86.5 MB in the beginning and 60.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.02 ms. Allocated memory is still 161.5 MB. Free memory is still 60.9 MB. There was no memory consumed. Max. memory is 16.1 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 4 terminating modules (1 trivial, 3 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 -2 * p + 3 and consists of 7 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[nondetString1] and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 54 SDslu, 35 SDs, 0 SdLazy, 72 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital119 mio100 ax115 hnf98 lsp81 ukn84 mio100 lsp56 div100 bol100 ite100 ukn100 eq176 hnf89 smp97 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms 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...