./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/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 64bit --witnessprinter.graph.data.programhash 4a8b6acf5c3e1a62f919c5785e272fd1a6b568e6 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:36:20,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:36:20,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:36:20,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:36:20,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:36:20,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:36:20,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:36:20,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:36:20,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:36:20,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:36:20,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:36:20,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:36:20,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:36:20,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:36:20,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:36:20,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:36:20,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:36:20,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:36:20,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:36:20,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:36:20,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:36:20,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:36:20,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:36:20,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:36:20,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:36:20,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:36:20,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:36:20,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:36:20,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:36:20,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:36:20,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:36:20,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:36:20,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:36:20,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:36:20,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:36:20,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:36:20,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:36:20,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:36:20,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:36:20,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:36:20,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:36:20,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:36:20,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:36:20,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:36:20,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:36:20,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:36:20,714 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:36:20,715 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:36:20,715 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:36:20,715 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:36:20,715 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:36:20,716 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:36:20,716 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:36:20,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:36:20,717 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:36:20,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:36:20,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:36:20,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:36:20,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:36:20,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:36:20,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:36:20,719 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:36:20,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:36:20,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:36:20,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:36:20,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:36:20,720 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:36:20,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:36:20,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:36:20,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:36:20,721 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:36:20,722 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:36:20,723 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_0fb46a89-a633-4160-9da3-d07199a59d5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8b6acf5c3e1a62f919c5785e272fd1a6b568e6 [2020-11-29 23:36:21,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:36:21,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:36:21,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:36:21,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:36:21,100 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:36:21,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i [2020-11-29 23:36:21,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/data/60e3c9ad4/e00a29060d0842a68041bba285f317a4/FLAGce9f34592 [2020-11-29 23:36:21,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:36:21,845 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i [2020-11-29 23:36:21,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/data/60e3c9ad4/e00a29060d0842a68041bba285f317a4/FLAGce9f34592 [2020-11-29 23:36:22,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/bin/uautomizer/data/60e3c9ad4/e00a29060d0842a68041bba285f317a4 [2020-11-29 23:36:22,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:36:22,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:36:22,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:36:22,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:36:22,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:36:22,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70454446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22, skipping insertion in model container [2020-11-29 23:36:22,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:36:22,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:36:22,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:36:22,627 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:36:22,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:36:22,796 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:36:22,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22 WrapperNode [2020-11-29 23:36:22,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:36:22,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:36:22,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:36:22,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:36:22,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:36:22,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:36:22,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:36:22,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:36:22,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... [2020-11-29 23:36:22,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:36:22,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:36:22,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:36:22,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:36:22,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/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 [2020-11-29 23:36:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:36:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:36:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:36:23,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:36:23,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:36:23,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:36:23,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:36:23,288 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 23:36:23,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:23 BoogieIcfgContainer [2020-11-29 23:36:23,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:36:23,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:36:23,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:36:23,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:36:23,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:36:23,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:36:22" (1/3) ... [2020-11-29 23:36:23,328 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435c0b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:36:23, skipping insertion in model container [2020-11-29 23:36:23,328 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:36:23,328 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:22" (2/3) ... [2020-11-29 23:36:23,329 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@435c0b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:36:23, skipping insertion in model container [2020-11-29 23:36:23,329 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:36:23,329 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:23" (3/3) ... [2020-11-29 23:36:23,331 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen_diffterm_alloca.i [2020-11-29 23:36:23,393 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:36:23,393 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:36:23,394 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:36:23,394 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:36:23,394 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:36:23,394 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:36:23,395 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:36:23,395 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:36:23,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 23:36:23,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:36:23,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:36:23,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:36:23,446 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:36:23,447 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:36:23,447 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:36:23,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 23:36:23,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:36:23,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:36:23,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:36:23,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:36:23,450 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:36:23,460 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 12#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(49, 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~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, 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; 7#L367-3true [2020-11-29 23:36:23,460 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 4#L367-1true assume !!(49 != cstrlen_#t~mem205);havoc cstrlen_#t~mem205;cstrlen_#t~post206.base, cstrlen_#t~post206.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post206.base, 1 + cstrlen_#t~post206.offset;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 7#L367-3true [2020-11-29 23:36:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-29 23:36:23,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:23,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525298601] [2020-11-29 23:36:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,656 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:36:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2020-11-29 23:36:23,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:23,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307419189] [2020-11-29 23:36:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,683 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:36:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2020-11-29 23:36:23,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:23,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463711691] [2020-11-29 23:36:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:23,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:23,752 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:36:24,129 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-11-29 23:36:24,247 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-29 23:36:24,264 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:36:24,273 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:36:24,273 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:36:24,273 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:36:24,274 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:36:24,274 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:36:24,274 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:36:24,274 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:36:24,274 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_diffterm_alloca.i_Iteration1_Lasso [2020-11-29 23:36:24,275 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:36:24,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:36:24,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,522 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-11-29 23:36:24,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:24,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:36:25,168 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:36:25,174 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/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) [2020-11-29 23:36:25,202 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 [2020-11-29 23:36:25,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:36:25,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:36:25,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:36:25,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:36:25,236 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:36:25,237 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:36:25,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:36:25,309 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 [2020-11-29 23:36:25,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:36:25,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:36:25,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:36:25,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:36:25,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:36:25,348 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:36:25,378 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:36:25,641 INFO L443 ModelExtractionUtils]: Simplification made 21 calls to the SMT solver. [2020-11-29 23:36:25,641 INFO L444 ModelExtractionUtils]: 8 out of 28 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0fb46a89-a633-4160-9da3-d07199a59d5e/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) [2020-11-29 23:36:25,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:36:25,656 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 23:36:25,656 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:36:25,657 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, ULTIMATE.start_main_~length1~0) = -1*ULTIMATE.start_cstrlen_~p~0.offset + 1*ULTIMATE.start_main_~length1~0 Supporting invariants [1*ULTIMATE.start_main_~length1~0 - 1*v_rep(select #length ULTIMATE.start_cstrlen_~p~0.base)_1 >= 0] [2020-11-29 23:36:25,721 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2020-11-29 23:36:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:36:25,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:36:25,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:36:25,847 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:36:25,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:36:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:36:25,912 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 23:36:25,914 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2020-11-29 23:36:26,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 23 states and 26 transitions. Complement of second has 5 states. [2020-11-29 23:36:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 23:36:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:36:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 23:36:26,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 23:36:26,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:36:26,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 23:36:26,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:36:26,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 23:36:26,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:36:26,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2020-11-29 23:36:26,029 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:36:26,032 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-11-29 23:36:26,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:36:26,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:36:26,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:36:26,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:36:26,035 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:36:26,035 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:36:26,035 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:36:26,036 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:36:26,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:36:26,036 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:36:26,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:36:26,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:36:26 BoogieIcfgContainer [2020-11-29 23:36:26,043 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:36:26,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:36:26,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:36:26,044 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:36:26,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:23" (3/4) ... [2020-11-29 23:36:26,048 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:36:26,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:36:26,052 INFO L168 Benchmark]: Toolchain (without parser) took 3925.35 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 50.1 MB in the end (delta: -4.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,054 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:36:26,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.51 ms. Allocated memory is still 81.8 MB. Free memory was 45.2 MB in the beginning and 44.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.68 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 42.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,058 INFO L168 Benchmark]: Boogie Preprocessor took 52.12 ms. Allocated memory is still 81.8 MB. Free memory was 42.3 MB in the beginning and 41.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,060 INFO L168 Benchmark]: RCFGBuilder took 381.74 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 40.8 MB in the beginning and 76.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,062 INFO L168 Benchmark]: BuchiAutomizer took 2737.73 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 50.1 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:26,065 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 98.6 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:36:26,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 44.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 668.51 ms. Allocated memory is still 81.8 MB. Free memory was 45.2 MB in the beginning and 44.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.68 ms. Allocated memory is still 81.8 MB. Free memory was 44.1 MB in the beginning and 42.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.12 ms. Allocated memory is still 81.8 MB. Free memory was 42.3 MB in the beginning and 41.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 381.74 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 40.8 MB in the beginning and 76.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2737.73 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 50.1 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.00 ms. Allocated memory is still 98.6 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * p + length1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 15 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital113 mio100 ax100 hnf99 lsp94 ukn91 mio100 lsp46 div100 bol100 ite100 ukn100 eq193 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 87ms VariablesStem: 6 VariablesLoop: 4 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...