./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/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 c1eb142aa621a3b7c962754bdbb3857cadaf1720 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:51:04,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:51:04,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:51:04,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:51:04,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:51:04,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:51:04,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:51:04,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:51:04,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:51:04,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:51:04,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:51:04,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:51:04,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:51:04,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:51:04,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:51:04,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:51:04,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:51:04,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:51:04,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:51:04,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:51:04,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:51:04,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:51:04,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:51:04,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:51:04,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:51:04,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:51:04,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:51:04,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:51:04,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:51:04,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:51:04,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:51:04,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:51:04,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:51:04,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:51:04,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:51:04,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:51:04,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:51:04,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:51:04,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:51:04,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:51:04,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:51:04,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:51:04,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:51:04,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:51:04,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:51:04,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:51:04,942 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:51:04,943 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:51:04,943 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:51:04,943 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:51:04,943 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:51:04,944 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:51:04,944 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:51:04,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:51:04,945 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:51:04,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:51:04,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:51:04,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:51:04,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:51:04,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:51:04,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:51:04,947 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:51:04,947 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:51:04,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:51:04,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:51:04,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:51:04,948 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:51:04,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:51:04,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:51:04,949 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:51:04,950 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:51:04,950 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/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 -> c1eb142aa621a3b7c962754bdbb3857cadaf1720 [2019-11-25 08:51:05,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:51:05,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:51:05,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:51:05,104 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:51:05,104 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:51:05,105 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-25 08:51:05,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/data/48028fac3/afed1ac165a34a8daa45b24d9316aeb3/FLAGc200d38a2 [2019-11-25 08:51:05,644 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:51:05,645 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-25 08:51:05,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/data/48028fac3/afed1ac165a34a8daa45b24d9316aeb3/FLAGc200d38a2 [2019-11-25 08:51:05,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/data/48028fac3/afed1ac165a34a8daa45b24d9316aeb3 [2019-11-25 08:51:05,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:51:05,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:51:05,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:05,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:51:05,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:51:05,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:05" (1/1) ... [2019-11-25 08:51:05,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d493948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:05, skipping insertion in model container [2019-11-25 08:51:05,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:05" (1/1) ... [2019-11-25 08:51:05,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:51:05,960 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:51:06,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:06,297 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:51:06,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:06,401 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:51:06,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06 WrapperNode [2019-11-25 08:51:06,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:06,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:06,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:51:06,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:51:06,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:06,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:51:06,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:51:06,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:51:06,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... [2019-11-25 08:51:06,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:51:06,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:51:06,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:51:06,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:51:06,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:51:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:51:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:51:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:51:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:51:06,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:51:06,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:51:06,771 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:51:06,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:06 BoogieIcfgContainer [2019-11-25 08:51:06,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:51:06,773 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:51:06,773 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:51:06,775 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:51:06,776 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:06,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:51:05" (1/3) ... [2019-11-25 08:51:06,777 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6435fe19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:06, skipping insertion in model container [2019-11-25 08:51:06,777 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:06,777 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:06" (2/3) ... [2019-11-25 08:51:06,778 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6435fe19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:06, skipping insertion in model container [2019-11-25 08:51:06,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:06,778 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:06" (3/3) ... [2019-11-25 08:51:06,779 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-2.i [2019-11-25 08:51:06,818 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:51:06,818 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:51:06,819 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:51:06,819 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:51:06,819 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:51:06,819 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:51:06,819 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:51:06,820 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:51:06,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-25 08:51:06,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:06,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:06,853 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:06,860 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:06,860 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:51:06,861 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:51:06,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-25 08:51:06,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:06,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:06,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:06,863 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:06,863 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:51:06,872 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 3#L558true assume !(main_~length1~0 < 1); 7#L558-2true assume !(main_~length2~0 < 1); 13#L561-1true call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset, cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrcmp_#res;havoc cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset, cstrcmp_#t~mem6, cstrcmp_#t~mem3, cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset, cstrcmp_#t~mem4, cstrcmp_#t~mem8, cstrcmp_#t~pre7.base, cstrcmp_#t~pre7.offset, cstrcmp_#t~mem9, cstrcmp_~s1.base, cstrcmp_~s1.offset, cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset; 4#L550-3true [2019-11-25 08:51:06,872 INFO L796 eck$LassoCheckResult]: Loop: 4#L550-3true call cstrcmp_#t~mem3 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset := cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#t~post2.base, 1 + cstrcmp_#t~post2.offset;call cstrcmp_#t~mem4 := read~int(cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset, 1); 15#L550-1true assume !!(cstrcmp_#t~mem3 == cstrcmp_#t~mem4);havoc cstrcmp_#t~mem4;havoc cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset;havoc cstrcmp_#t~mem3;cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset := cstrcmp_~s1.base, cstrcmp_~s1.offset;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#t~post5.base, 1 + cstrcmp_#t~post5.offset;call cstrcmp_#t~mem6 := read~int(cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset, 1); 11#L551true assume !(0 == cstrcmp_#t~mem6);havoc cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset;havoc cstrcmp_#t~mem6; 4#L550-3true [2019-11-25 08:51:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:06,879 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-11-25 08:51:06,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:06,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465205617] [2019-11-25 08:51:06,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,035 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash 49816, now seen corresponding path program 1 times [2019-11-25 08:51:07,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:07,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249483434] [2019-11-25 08:51:07,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash 180429619, now seen corresponding path program 1 times [2019-11-25 08:51:07,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:07,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164076305] [2019-11-25 08:51:07,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:07,155 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:07,346 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-11-25 08:51:07,835 WARN L192 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-11-25 08:51:07,985 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-11-25 08:51:07,997 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:07,998 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:07,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:07,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:07,999 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:07,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:07,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:07,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:08,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrcmp-alloca-2.i_Iteration1_Lasso [2019-11-25 08:51:08,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:08,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:08,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,442 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-11-25 08:51:08,638 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-25 08:51:08,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:08,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:09,395 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:09,403 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:51:09,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,418 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:09,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:09,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:09,426 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:51:09,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:09,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,438 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:09,438 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:09,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:51:09,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:09,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:09,465 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,478 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:51:09,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:09,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:09,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:09,482 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:51:09,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:09,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:09,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:09,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:09,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:09,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:09,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:09,738 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2019-11-25 08:51:09,738 INFO L444 ModelExtractionUtils]: 12 out of 46 variables were initially zero. Simplification set additionally 31 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bec9b7bf-c92f-471a-a789-60c52cbc30f6/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) [2019-11-25 08:51:09,759 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:09,762 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:51:09,763 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:09,763 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrcmp_~s2.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1) = -1*ULTIMATE.start_cstrcmp_~s2.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1 Supporting invariants [] [2019-11-25 08:51:09,829 INFO L297 tatePredicateManager]: 14 out of 16 supporting invariants were superfluous and have been removed [2019-11-25 08:51:09,843 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:51:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:09,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:51:09,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:09,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:51:09,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:10,026 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:10,027 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2019-11-25 08:51:10,104 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 22 states and 28 transitions. Complement of second has 5 states. [2019-11-25 08:51:10,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 0 non-accepting loop states 2 accepting loop states [2019-11-25 08:51:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-25 08:51:10,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:51:10,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,110 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:10,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:51:10,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:10,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:51:10,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:10,240 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:10,240 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2019-11-25 08:51:10,325 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 25 states and 30 transitions. Complement of second has 10 states. [2019-11-25 08:51:10,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2019-11-25 08:51:10,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:51:10,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:51:10,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-25 08:51:10,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:10,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-11-25 08:51:10,331 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:10,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2019-11-25 08:51:10,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:51:10,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:51:10,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:51:10,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:51:10,336 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:10,336 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:10,336 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:10,336 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:51:10,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:51:10,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:10,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:51:10,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:51:10 BoogieIcfgContainer [2019-11-25 08:51:10,347 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:51:10,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:10,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:10,348 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:10,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:06" (3/4) ... [2019-11-25 08:51:10,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:51:10,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:10,355 INFO L168 Benchmark]: Toolchain (without parser) took 4438.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 938.1 MB in the beginning and 953.1 MB in the end (delta: -15.0 MB). Peak memory consumption was 112.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:10,355 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:10,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:10,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:10,358 INFO L168 Benchmark]: Boogie Preprocessor took 25.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:10,359 INFO L168 Benchmark]: RCFGBuilder took 301.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:10,360 INFO L168 Benchmark]: BuchiAutomizer took 3574.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.1 MB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:10,360 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 1.2 GB. Free memory is still 953.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:10,369 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 486.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3574.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.1 MB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.77 ms. Allocated memory is still 1.2 GB. Free memory is still 953.1 MB. There was no memory consumed. Max. memory is 11.5 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 -1 * s2 + unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] and consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. 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 [0, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 5 SDs, 0 SdLazy, 21 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital209 mio100 ax108 hnf99 lsp89 ukn86 mio100 lsp47 div100 bol100 ite100 ukn100 eq195 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms 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...