./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1693662d9872ce45cd117d61c82cdfc52e871ea9 .......................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:11:51,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:11:51,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:11:52,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:11:52,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:11:52,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:11:52,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:11:52,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:11:52,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:11:52,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:11:52,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:11:52,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:11:52,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:11:52,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:11:52,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:11:52,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:11:52,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:11:52,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:11:52,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:11:52,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:11:52,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:11:52,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:11:52,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:11:52,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:11:52,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:11:52,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:11:52,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:11:52,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:11:52,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:11:52,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:11:52,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:11:52,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:11:52,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:11:52,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:11:52,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:11:52,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:11:52,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:11:52,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:11:52,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:11:52,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:11:52,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:11:52,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 22:11:52,209 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:11:52,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:11:52,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:11:52,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:11:52,212 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:11:52,213 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:11:52,213 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:11:52,213 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:11:52,213 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:11:52,213 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:11:52,215 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:11:52,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:11:52,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:11:52,216 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:11:52,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:11:52,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:11:52,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:11:52,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:11:52,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:11:52,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:11:52,217 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:11:52,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:11:52,218 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:11:52,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:11:52,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:11:52,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:11:52,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:11:52,219 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:11:52,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:11:52,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:11:52,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:11:52,221 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:11:52,223 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:11:52,223 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_c2af6ae9-93ef-42b4-9d1a-81d73de16407/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1693662d9872ce45cd117d61c82cdfc52e871ea9 [2020-11-29 22:11:52,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:11:52,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:11:52,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:11:52,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:11:52,597 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:11:52,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-11-29 22:11:52,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/data/9eb0a7710/eb910caf50004362aa7c00dc0c6d543b/FLAG1b90f11a9 [2020-11-29 22:11:53,232 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:11:53,232 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2020-11-29 22:11:53,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/data/9eb0a7710/eb910caf50004362aa7c00dc0c6d543b/FLAG1b90f11a9 [2020-11-29 22:11:53,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/data/9eb0a7710/eb910caf50004362aa7c00dc0c6d543b [2020-11-29 22:11:53,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:11:53,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:11:53,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:11:53,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:11:53,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:11:53,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f659243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53, skipping insertion in model container [2020-11-29 22:11:53,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:11:53,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:11:53,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:11:53,833 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:11:53,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:11:53,865 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:11:53,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53 WrapperNode [2020-11-29 22:11:53,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:11:53,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:11:53,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:11:53,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:11:53,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:11:53,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:11:53,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:11:53,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:11:53,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... [2020-11-29 22:11:53,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:11:53,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:11:53,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:11:53,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:11:53,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/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 22:11:54,017 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-29 22:11:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-29 22:11:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:11:54,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:11:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:11:54,021 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-11-29 22:11:54,022 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-11-29 22:11:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:11:54,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:11:54,317 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 22:11:54,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:54 BoogieIcfgContainer [2020-11-29 22:11:54,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:11:54,332 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:11:54,332 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:11:54,346 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:11:54,347 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:11:54,347 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:11:53" (1/3) ... [2020-11-29 22:11:54,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@456fca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:11:54, skipping insertion in model container [2020-11-29 22:11:54,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:11:54,349 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:11:53" (2/3) ... [2020-11-29 22:11:54,350 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@456fca59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:11:54, skipping insertion in model container [2020-11-29 22:11:54,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:11:54,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:54" (3/3) ... [2020-11-29 22:11:54,351 INFO L373 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-2.c [2020-11-29 22:11:54,412 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:11:54,412 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:11:54,412 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:11:54,412 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:11:54,412 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:11:54,413 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:11:54,413 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:11:54,413 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:11:54,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 22:11:54,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 22:11:54,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:11:54,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:11:54,456 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 22:11:54,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:11:54,457 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:11:54,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-29 22:11:54,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 22:11:54,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:11:54,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:11:54,461 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 22:11:54,461 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:11:54,469 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res; 19#L23true call f(2);< 17#fENTRYtrue [2020-11-29 22:11:54,469 INFO L796 eck$LassoCheckResult]: Loop: 17#fENTRYtrue ~n := #in~n; 5#L9true assume !(~n < 3);#t~post9 := ~n;~n := #t~post9 - 1;havoc #t~post9; 3#L11true call f2(~n);< 8#f2ENTRYtrue ~n := #in~n; 12#L16true assume !(~n < 3);#t~post10 := ~n;~n := #t~post10 - 1;havoc #t~post10; 9#L18true call f(~n);< 17#fENTRYtrue [2020-11-29 22:11:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:54,476 INFO L82 PathProgramCache]: Analyzing trace with hash 40796, now seen corresponding path program 1 times [2020-11-29 22:11:54,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:54,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018334391] [2020-11-29 22:11:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:11:54,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:11:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:11:54,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:11:54,616 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:11:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash 892079717, now seen corresponding path program 1 times [2020-11-29 22:11:54,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:54,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115254384] [2020-11-29 22:11:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:11:54,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:11:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:11:54,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:11:54,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:11:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:54,659 INFO L82 PathProgramCache]: Analyzing trace with hash 30440832, now seen corresponding path program 1 times [2020-11-29 22:11:54,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:11:54,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749874854] [2020-11-29 22:11:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:11:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:54,815 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 22:11:54,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749874854] [2020-11-29 22:11:54,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:11:54,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:11:54,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026403645] [2020-11-29 22:11:55,028 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:11:55,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:11:55,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:11:55,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:11:55,030 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:11:55,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:11:55,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:11:55,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2020-11-29 22:11:55,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:11:55,031 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:11:55,049 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 22:11:55,058 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 22:11:55,069 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 22:11:55,073 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 22:11:55,077 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 22:11:55,083 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 22:11:55,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:11:55,159 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/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 22:11:55,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:11:55,166 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:11:55,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#t~post10=0} Honda state: {f2_#t~post10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:11:55,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:11:55,225 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/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 22:11:55,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:11:55,274 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,321 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:11:55,323 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:11:55,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:11:55,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:11:55,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:11:55,324 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:11:55,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:11:55,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:11:55,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2020-11-29 22:11:55,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:11:55,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:11:55,326 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 22:11:55,334 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 22:11:55,338 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 22:11:55,342 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 22:11:55,345 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 22:11:55,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:11:55,407 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:11:55,412 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:11:55,417 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 22:11:55,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:11:55,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:11:55,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:11:55,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:11:55,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:11:55,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:11:55,426 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,431 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:11:55,435 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 22:11:55,435 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2af6ae9-93ef-42b4-9d1a-81d73de16407/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) [2020-11-29 22:11:55,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:11:55,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:11:55,477 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:11:55,478 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:11:55,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:11:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:11:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:55,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:11:55,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:11:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:11:55,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:11:55,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:11:55,810 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 22:11:55,829 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-11-29 22:11:55,830 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 7 states. [2020-11-29 22:11:56,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 7 states. Result 61 states and 67 transitions. Complement of second has 26 states. [2020-11-29 22:11:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-11-29 22:11:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 22:11:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 26 transitions. [2020-11-29 22:11:56,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 22:11:56,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:11:56,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-29 22:11:56,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:11:56,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 3 letters. Loop has 12 letters. [2020-11-29 22:11:56,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:11:56,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 67 transitions. [2020-11-29 22:11:56,139 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:11:56,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2020-11-29 22:11:56,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:11:56,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:11:56,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:11:56,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:11:56,145 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:11:56,145 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:11:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:11:56,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:11:56,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:11:56,153 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-11-29 22:11:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:11:56,156 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 22:11:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:11:56,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 22:11:56,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:11:56,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:11:56,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:11:56,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:11:56,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:11:56,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:11:56,159 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:11:56,159 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:11:56,159 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:11:56,159 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:11:56,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:11:56,160 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:11:56,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:11:56,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:11:56 BoogieIcfgContainer [2020-11-29 22:11:56,166 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:11:56,167 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:11:56,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:11:56,167 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:11:56,168 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:11:54" (3/4) ... [2020-11-29 22:11:56,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:11:56,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:11:56,175 INFO L168 Benchmark]: Toolchain (without parser) took 2596.21 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.7 MB in the beginning and 100.6 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:11:56,176 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 77.6 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:11:56,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.60 ms. Allocated memory is still 104.9 MB. Free memory was 74.4 MB in the beginning and 83.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:11:56,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 104.9 MB. Free memory was 83.3 MB in the beginning and 82.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:11:56,181 INFO L168 Benchmark]: Boogie Preprocessor took 17.50 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 81.2 MB in the end (delta: 902.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:11:56,182 INFO L168 Benchmark]: RCFGBuilder took 394.54 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 70.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:11:56,184 INFO L168 Benchmark]: BuchiAutomizer took 1834.28 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.4 MB in the beginning and 101.7 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:11:56,185 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 125.8 MB. Free memory is still 100.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:11:56,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 77.6 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.60 ms. Allocated memory is still 104.9 MB. Free memory was 74.4 MB in the beginning and 83.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 104.9 MB. Free memory was 83.3 MB in the beginning and 82.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.50 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 81.2 MB in the end (delta: 902.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 394.54 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 70.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1834.28 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 70.4 MB in the beginning and 101.7 MB in the end (delta: -31.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.46 ms. Allocated memory is still 125.8 MB. Free memory is still 100.6 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 9 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. 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: 7 SDtfs, 12 SDslu, 9 SDs, 0 SdLazy, 56 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 64ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...