./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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 79c8f3e75568b724086e7997d923ad8ab07e6657 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:58:22,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:58:22,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:58:22,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:58:22,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:58:22,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:58:22,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:58:22,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:58:22,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:58:22,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:58:22,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:58:22,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:58:22,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:58:22,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:58:22,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:58:22,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:58:22,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:58:22,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:58:22,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:58:22,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:58:22,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:58:22,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:58:22,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:58:22,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:58:22,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:58:22,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:58:22,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:58:22,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:58:22,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:58:22,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:58:22,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:58:22,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:58:22,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:58:22,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:58:22,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:58:22,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:58:22,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:58:22,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:58:22,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:58:22,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:58:22,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:58:22,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 14:58:23,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:58:23,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:58:23,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:58:23,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:58:23,005 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:58:23,005 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 14:58:23,006 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 14:58:23,006 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 14:58:23,006 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 14:58:23,006 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 14:58:23,006 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 14:58:23,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:58:23,007 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 14:58:23,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:58:23,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:58:23,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 14:58:23,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 14:58:23,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 14:58:23,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:58:23,008 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 14:58:23,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:58:23,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 14:58:23,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:58:23,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:58:23,009 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 14:58:23,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:58:23,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:58:23,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:58:23,010 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 14:58:23,012 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 14:58:23,012 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_18a2274c-1153-4f42-8904-af607511bf47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79c8f3e75568b724086e7997d923ad8ab07e6657 [2020-12-01 14:58:23,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:58:23,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:58:23,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:58:23,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:58:23,339 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:58:23,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i [2020-12-01 14:58:23,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/data/e73b7e565/5508adf5c9e548239e8a19843f56bc75/FLAG57fe82bd2 [2020-12-01 14:58:23,970 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:58:23,970 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i [2020-12-01 14:58:23,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/data/e73b7e565/5508adf5c9e548239e8a19843f56bc75/FLAG57fe82bd2 [2020-12-01 14:58:24,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/data/e73b7e565/5508adf5c9e548239e8a19843f56bc75 [2020-12-01 14:58:24,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:58:24,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:58:24,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:58:24,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:58:24,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:58:24,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:24,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1a8599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24, skipping insertion in model container [2020-12-01 14:58:24,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:24,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:58:24,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:58:24,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:58:24,820 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:58:24,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:58:24,975 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:58:24,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24 WrapperNode [2020-12-01 14:58:24,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:58:24,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:58:24,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:58:24,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:58:24,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:58:25,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:58:25,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:58:25,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:58:25,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... [2020-12-01 14:58:25,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:58:25,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:58:25,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:58:25,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:58:25,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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 [2020-12-01 14:58:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 14:58:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:58:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:58:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:58:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:58:25,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:58:25,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:58:25,624 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-01 14:58:25,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:25 BoogieIcfgContainer [2020-12-01 14:58:25,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:58:25,627 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 14:58:25,628 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 14:58:25,635 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 14:58:25,639 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:58:25,639 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 02:58:24" (1/3) ... [2020-12-01 14:58:25,641 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18cfd801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:58:25, skipping insertion in model container [2020-12-01 14:58:25,641 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:58:25,641 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:24" (2/3) ... [2020-12-01 14:58:25,653 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18cfd801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:58:25, skipping insertion in model container [2020-12-01 14:58:25,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:58:25,653 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:25" (3/3) ... [2020-12-01 14:58:25,655 INFO L389 chiAutomizerObserver]: Analyzing ICFG cstrcat_reverse_alloca.i [2020-12-01 14:58:25,731 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 14:58:25,731 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 14:58:25,731 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 14:58:25,731 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:58:25,731 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:58:25,732 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 14:58:25,732 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:58:25,732 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 14:58:25,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-12-01 14:58:25,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-12-01 14:58:25,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:58:25,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:58:25,784 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:58:25,784 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:58:25,784 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 14:58:25,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-12-01 14:58:25,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-12-01 14:58:25,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:58:25,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:58:25,788 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-12-01 14:58:25,788 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 14:58:25,797 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#L-1true havoc main_#res;havoc main_#t~nondet210, main_#t~nondet211, main_#t~nondet212, main_#t~malloc213.base, main_#t~malloc213.offset, main_#t~malloc214.base, main_#t~malloc214.offset, main_#t~ret215.base, main_#t~ret215.offset, main_~length1~0, main_~length2~0, main_~length3~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet210;havoc main_#t~nondet210;main_~length2~0 := main_#t~nondet211;havoc main_#t~nondet211;main_~length3~0 := main_#t~nondet212;havoc main_#t~nondet212; 3#L377true assume !(main_~length1~0 < 1); 6#L377-2true assume !(main_~length2~0 < 2); 15#L380-1true assume !(main_~length3~0 < 1); 10#L383-1true assume !(main_~length2~0 - main_~length3~0 < main_~length1~0 || main_~length3~0 > main_~length2~0);call main_#t~malloc213.base, main_#t~malloc213.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc213.base, main_#t~malloc213.offset;call main_#t~malloc214.base, main_#t~malloc214.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc214.base, main_#t~malloc214.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - main_~length3~0), 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrcat_#in~s1.base, cstrcat_#in~s1.offset, cstrcat_#in~s2.base, cstrcat_#in~s2.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrcat_#res.base, cstrcat_#res.offset;havoc cstrcat_#t~post206.base, cstrcat_#t~post206.offset, cstrcat_#t~mem205, cstrcat_#t~post207.base, cstrcat_#t~post207.offset, cstrcat_#t~post208.base, cstrcat_#t~post208.offset, cstrcat_#t~mem209, cstrcat_~s1.base, cstrcat_~s1.offset, cstrcat_~s2.base, cstrcat_~s2.offset, cstrcat_~s~0.base, cstrcat_~s~0.offset;cstrcat_~s1.base, cstrcat_~s1.offset := cstrcat_#in~s1.base, cstrcat_#in~s1.offset;cstrcat_~s2.base, cstrcat_~s2.offset := cstrcat_#in~s2.base, cstrcat_#in~s2.offset;cstrcat_~s~0.base, cstrcat_~s~0.offset := cstrcat_~s1.base, cstrcat_~s1.offset; 7#L367-3true [2020-12-01 14:58:25,797 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrcat_#t~mem205 := read~int(cstrcat_~s~0.base, cstrcat_~s~0.offset, 1); 4#L367-1true assume !!(0 != cstrcat_#t~mem205);havoc cstrcat_#t~mem205;cstrcat_#t~post206.base, cstrcat_#t~post206.offset := cstrcat_~s~0.base, cstrcat_~s~0.offset;cstrcat_~s~0.base, cstrcat_~s~0.offset := cstrcat_#t~post206.base, cstrcat_#t~post206.offset - 1;havoc cstrcat_#t~post206.base, cstrcat_#t~post206.offset; 7#L367-3true [2020-12-01 14:58:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-12-01 14:58:25,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:25,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323328446] [2020-12-01 14:58:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:25,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:25,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:26,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:58:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2020-12-01 14:58:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:26,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092652752] [2020-12-01 14:58:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:26,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:26,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:26,051 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:58:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2020-12-01 14:58:26,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:26,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635714176] [2020-12-01 14:58:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:26,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:58:26,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:58:26,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:58:26,788 WARN L197 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2020-12-01 14:58:26,975 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-01 14:58:26,994 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 14:58:26,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 14:58:26,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 14:58:26,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 14:58:26,996 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 14:58:26,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:26,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 14:58:26,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 14:58:26,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrcat_reverse_alloca.i_Iteration1_Lasso [2020-12-01 14:58:26,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 14:58:26,998 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 14:58:27,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,394 WARN L197 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-12-01 14:58:27,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 14:58:27,738 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-01 14:58:28,063 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 14:58:28,068 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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) [2020-12-01 14:58:28,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:58:28,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:58:28,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,106 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:58:28,129 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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) [2020-12-01 14:58:28,196 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 [2020-12-01 14:58:28,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:58:28,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:58:28,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,203 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,210 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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) [2020-12-01 14:58:28,252 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 [2020-12-01 14:58:28,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:58:28,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:58:28,280 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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 [2020-12-01 14:58:28,318 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 [2020-12-01 14:58:28,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:58:28,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 14:58:28,336 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,336 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:58:28,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/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) [2020-12-01 14:58:28,394 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 [2020-12-01 14:58:28,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:58:28,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,417 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,417 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:58:28,439 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 14:58:28,483 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 [2020-12-01 14:58:28,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 14:58:28,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 14:58:28,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 14:58:28,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 14:58:28,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 14:58:28,534 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 14:58:28,579 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-12-01 14:58:28,579 INFO L444 ModelExtractionUtils]: 39 out of 49 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_18a2274c-1153-4f42-8904-af607511bf47/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 14:58:28,616 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 14:58:28,660 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-12-01 14:58:28,661 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 14:58:28,661 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc214.base)_1, ULTIMATE.start_cstrcat_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc214.base)_1 + 2*ULTIMATE.start_cstrcat_~s~0.offset Supporting invariants [] [2020-12-01 14:58:28,736 INFO L297 tatePredicateManager]: 6 out of 7 supporting invariants were superfluous and have been removed [2020-12-01 14:58:28,746 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 14:58:28,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 14:58:28,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:58:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:28,876 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 14:58:28,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:58:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:28,921 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-12-01 14:58:28,923 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-12-01 14:58:29,050 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 8 states. [2020-12-01 14:58:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-12-01 14:58:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 14:58:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2020-12-01 14:58:29,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 2 letters. [2020-12-01 14:58:29,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:58:29,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 8 letters. Loop has 2 letters. [2020-12-01 14:58:29,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:58:29,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2020-12-01 14:58:29,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 14:58:29,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2020-12-01 14:58:29,068 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 14:58:29,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-12-01 14:58:29,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 14:58:29,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 14:58:29,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 14:58:29,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 14:58:29,074 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:58:29,074 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:58:29,074 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:58:29,074 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 14:58:29,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:58:29,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 14:58:29,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 14:58:29,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 02:58:29 BoogieIcfgContainer [2020-12-01 14:58:29,083 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 14:58:29,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:58:29,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:58:29,084 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:58:29,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:25" (3/4) ... [2020-12-01 14:58:29,088 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 14:58:29,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:58:29,091 INFO L168 Benchmark]: Toolchain (without parser) took 4799.51 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 61.5 MB in the beginning and 47.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2020-12-01 14:58:29,093 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:58:29,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.72 ms. Allocated memory is still 94.4 MB. Free memory was 61.3 MB in the beginning and 56.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:58:29,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.13 ms. Allocated memory is still 94.4 MB. Free memory was 56.7 MB in the beginning and 55.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:58:29,097 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 94.4 MB. Free memory was 55.2 MB in the beginning and 53.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:58:29,099 INFO L168 Benchmark]: RCFGBuilder took 564.62 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 38.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 14:58:29,101 INFO L168 Benchmark]: BuchiAutomizer took 3455.73 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 38.4 MB in the beginning and 47.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-01 14:58:29,110 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 115.3 MB. Free memory was 47.2 MB in the beginning and 47.2 MB in the end (delta: 49.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:58:29,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 77.6 MB. Free memory was 50.3 MB in the beginning and 50.3 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 682.72 ms. Allocated memory is still 94.4 MB. Free memory was 61.3 MB in the beginning and 56.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.13 ms. Allocated memory is still 94.4 MB. Free memory was 56.7 MB in the beginning and 55.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 94.4 MB. Free memory was 55.2 MB in the beginning and 53.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 564.62 ms. Allocated memory is still 94.4 MB. Free memory was 53.5 MB in the beginning and 38.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3455.73 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 38.4 MB in the beginning and 47.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 115.3 MB. Free memory was 47.2 MB in the beginning and 47.2 MB in the end (delta: 49.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length2 * sizeof(char))] + 2 * s and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 15 SDslu, 7 SDs, 0 SdLazy, 8 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital203 mio100 ax100 hnf100 lsp97 ukn74 mio100 lsp54 div100 bol100 ite100 ukn100 eq187 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...