./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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 c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:14:53,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:14:53,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:14:53,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:14:53,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:14:53,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:14:53,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:14:53,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:14:53,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:14:53,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:14:53,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:14:53,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:14:53,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:14:53,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:14:53,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:14:53,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:14:53,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:14:53,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:14:53,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:14:53,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:14:53,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:14:53,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:14:53,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:14:53,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:14:53,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:14:53,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:14:53,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:14:53,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:14:53,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:14:53,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:14:53,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:14:53,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:14:53,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:14:53,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:14:53,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:14:53,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:14:53,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:14:53,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:14:53,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:14:53,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:14:53,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:14:53,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:14:53,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:14:53,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:14:53,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:14:53,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:14:53,824 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:14:53,824 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:14:53,824 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:14:53,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:14:53,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:14:53,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:14:53,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:14:53,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:14:53,827 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:14:53,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:14:53,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:14:53,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:14:53,827 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:14:53,828 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:14:53,828 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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 -> c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 [2019-12-07 17:14:53,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:14:53,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:14:53,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:14:53,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:14:53,947 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:14:53,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-12-07 17:14:53,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/data/d89fce7c6/f466a440f40f4374a8e1187d4e3e1a12/FLAGace8e1964 [2019-12-07 17:14:54,339 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:14:54,340 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-12-07 17:14:54,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/data/d89fce7c6/f466a440f40f4374a8e1187d4e3e1a12/FLAGace8e1964 [2019-12-07 17:14:54,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/data/d89fce7c6/f466a440f40f4374a8e1187d4e3e1a12 [2019-12-07 17:14:54,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:14:54,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:14:54,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:14:54,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:14:54,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:14:54,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4d5433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54, skipping insertion in model container [2019-12-07 17:14:54,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:14:54,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:14:54,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:14:54,636 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:14:54,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:14:54,713 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:14:54,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54 WrapperNode [2019-12-07 17:14:54,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:14:54,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:14:54,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:14:54,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:14:54,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:14:54,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:14:54,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:14:54,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:14:54,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... [2019-12-07 17:14:54,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:14:54,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:14:54,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:14:54,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:14:54,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:14:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:14:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:14:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:14:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:14:54,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:14:54,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:14:54,937 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:14:54,937 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 17:14:54,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:54 BoogieIcfgContainer [2019-12-07 17:14:54,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:14:54,938 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:14:54,938 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:14:54,941 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:14:54,941 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:14:54,941 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:14:54" (1/3) ... [2019-12-07 17:14:54,942 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cf7c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:14:54, skipping insertion in model container [2019-12-07 17:14:54,942 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:14:54,942 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:14:54" (2/3) ... [2019-12-07 17:14:54,942 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cf7c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:14:54, skipping insertion in model container [2019-12-07 17:14:54,942 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:14:54,942 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:54" (3/3) ... [2019-12-07 17:14:54,943 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2019-12-07 17:14:54,971 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:14:54,971 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:14:54,971 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:14:54,971 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:14:54,971 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:14:54,971 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:14:54,971 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:14:54,971 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:14:54,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 17:14:54,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:14:54,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:14:54,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:14:54,997 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:14:54,997 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:14:54,997 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:14:54,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 17:14:54,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:14:54,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:14:54,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:14:54,999 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:14:54,999 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:14:55,004 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 13#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L367-3true [2019-12-07 17:14:55,004 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 4#L367-1true assume !!(0 != 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, cstrlen_#t~post206.offset - 1;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 7#L367-3true [2019-12-07 17:14:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:14:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-12-07 17:14:55,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:14:55,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582931030] [2019-12-07 17:14:55,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:14:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,110 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:14:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:14:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2019-12-07 17:14:55,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:14:55,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356704965] [2019-12-07 17:14:55,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:14:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:14:55,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:14:55,121 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2019-12-07 17:14:55,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:14:55,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445751203] [2019-12-07 17:14:55,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:14:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:14:55,150 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:14:55,305 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-12-07 17:14:55,353 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:14:55,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:14:55,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:14:55,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:14:55,354 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:14:55,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:14:55,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:14:55,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:14:55,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2019-12-07 17:14:55,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:14:55,354 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:14:55,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:14:55,673 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:14:55,677 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:14:55,681 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:14:55,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:14:55,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:14:55,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:14:55,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:14:55,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:14:55,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:14:55,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:14:55,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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 [2019-12-07 17:14:55,696 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:14:55,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:14:55,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:14:55,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:14:55,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:14:55,705 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:14:55,705 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:14:55,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:14:55,717 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:14:55,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:14:55,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:14:55,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:14:55,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:14:55,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:14:55,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:14:55,724 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:14:55,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:14:55,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:14:55,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:14:55,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:14:55,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:14:55,737 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:14:55,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:14:55,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:14:55,770 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-12-07 17:14:55,770 INFO L444 ModelExtractionUtils]: 17 out of 28 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_09f611b4-d9f9-40b6-96ae-8f38f888491a/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 [2019-12-07 17:14:55,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:14:55,780 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:14:55,780 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:14:55,781 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset) = 2*ULTIMATE.start_cstrlen_~p~0.offset + 1 Supporting invariants [] [2019-12-07 17:14:55,790 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 17:14:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:14:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:14:55,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:14:55,824 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:14:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:14:55,833 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:14:55,834 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:14:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:14:55,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:14:55,854 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-12-07 17:14:55,886 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 23 states and 26 transitions. Complement of second has 5 states. [2019-12-07 17:14:55,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:14:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:14:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 17:14:55,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:14:55,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:14:55,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 17:14:55,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:14:55,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 17:14:55,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:14:55,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2019-12-07 17:14:55,893 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:14:55,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2019-12-07 17:14:55,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:14:55,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:14:55,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:14:55,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:14:55,896 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:14:55,896 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:14:55,897 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:14:55,897 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:14:55,897 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:14:55,897 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:14:55,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:14:55,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:14:55 BoogieIcfgContainer [2019-12-07 17:14:55,901 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:14:55,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:14:55,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:14:55,902 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:14:55,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:14:54" (3/4) ... [2019-12-07 17:14:55,905 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:14:55,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:14:55,906 INFO L168 Benchmark]: Toolchain (without parser) took 1545.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 942.5 MB in the beginning and 944.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 161.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:14:55,906 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:14:55,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 937.2 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:14:55,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:14:55,907 INFO L168 Benchmark]: Boogie Preprocessor took 19.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:14:55,908 INFO L168 Benchmark]: RCFGBuilder took 172.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:14:55,908 INFO L168 Benchmark]: BuchiAutomizer took 963.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.7 MB in the end (delta: 175.6 MB). Peak memory consumption was 175.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:14:55,909 INFO L168 Benchmark]: Witness Printer took 3.14 ms. Allocated memory is still 1.2 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:14:55,911 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 352.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 937.2 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 172.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 963.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.7 MB in the end (delta: 175.6 MB). Peak memory consumption was 175.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.14 ms. Allocated memory is still 1.2 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 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 2 * p + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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, 9 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital119 mio100 ax100 hnf99 lsp94 ukn87 mio100 lsp50 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 6 VariablesLoop: 3 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...