./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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 0.1.24-678e011 [2019-11-19 23:53:32,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:53:32,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:53:32,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:53:32,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:53:32,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:53:32,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:53:32,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:53:32,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:53:32,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:53:32,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:53:32,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:53:32,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:53:32,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:53:32,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:53:32,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:53:32,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:53:32,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:53:32,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:53:32,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:53:33,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:53:33,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:53:33,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:53:33,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:53:33,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:53:33,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:53:33,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:53:33,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:53:33,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:53:33,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:53:33,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:53:33,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:53:33,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:53:33,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:53:33,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:53:33,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:53:33,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:53:33,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:53:33,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:53:33,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:53:33,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:53:33,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 23:53:33,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:53:33,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:53:33,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:53:33,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:53:33,062 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:53:33,063 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:53:33,063 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:53:33,063 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:53:33,063 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:53:33,063 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:53:33,064 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:53:33,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:53:33,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:53:33,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:53:33,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:53:33,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:53:33,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:53:33,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:53:33,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:53:33,067 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:53:33,067 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:53:33,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:53:33,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:53:33,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:53:33,068 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:53:33,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:53:33,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:53:33,068 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:53:33,070 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:53:33,070 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_66f52171-ed17-4729-ba38-49a4dbe68e91/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 [2019-11-19 23:53:33,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:53:33,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:53:33,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:53:33,282 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:53:33,282 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:53:33,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-19 23:53:33,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/data/95045425a/fb767de2abb44aee97010c574f043507/FLAGb59d88e7e [2019-11-19 23:53:33,732 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:53:33,733 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-19 23:53:33,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/data/95045425a/fb767de2abb44aee97010c574f043507/FLAGb59d88e7e [2019-11-19 23:53:34,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/bin/uautomizer/data/95045425a/fb767de2abb44aee97010c574f043507 [2019-11-19 23:53:34,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:53:34,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:53:34,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:53:34,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:53:34,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:53:34,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505e0221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34, skipping insertion in model container [2019-11-19 23:53:34,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,079 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:53:34,138 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:53:34,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:53:34,593 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:53:34,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:53:34,684 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:53:34,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34 WrapperNode [2019-11-19 23:53:34,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:53:34,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:53:34,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:53:34,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:53:34,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:53:34,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:53:34,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:53:34,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:53:34,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... [2019-11-19 23:53:34,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:53:34,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:53:34,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:53:34,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:53:34,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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 [2019-11-19 23:53:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:53:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:53:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:53:34,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:53:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:53:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:53:35,179 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:53:35,179 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 23:53:35,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:35 BoogieIcfgContainer [2019-11-19 23:53:35,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:53:35,182 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:53:35,182 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:53:35,185 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:53:35,186 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:53:35,186 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:53:34" (1/3) ... [2019-11-19 23:53:35,188 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36545b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:53:35, skipping insertion in model container [2019-11-19 23:53:35,188 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:53:35,188 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:53:34" (2/3) ... [2019-11-19 23:53:35,188 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36545b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:53:35, skipping insertion in model container [2019-11-19 23:53:35,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:53:35,189 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:35" (3/3) ... [2019-11-19 23:53:35,190 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-2.i [2019-11-19 23:53:35,238 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:53:35,239 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:53:35,239 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:53:35,239 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:53:35,239 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:53:35,239 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:53:35,239 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:53:35,239 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:53:35,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-19 23:53:35,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:53:35,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:53:35,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:53:35,282 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:53:35,282 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:53:35,283 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:53:35,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-19 23:53:35,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:53:35,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:53:35,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:53:35,285 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:53:35,285 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:53:35,292 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 [2019-11-19 23:53:35,292 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~mem3;havoc cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset;havoc cstrcmp_#t~mem4;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~mem6;havoc cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset; 4#L550-3true [2019-11-19 23:53:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:35,297 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-11-19 23:53:35,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:53:35,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147111157] [2019-11-19 23:53:35,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:53:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:53:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash 49816, now seen corresponding path program 1 times [2019-11-19 23:53:35,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:53:35,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657393138] [2019-11-19 23:53:35,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:53:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:53:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash 180429619, now seen corresponding path program 1 times [2019-11-19 23:53:35,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:53:35,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027276991] [2019-11-19 23:53:35,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:53:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:53:35,600 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:53:35,782 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-11-19 23:53:36,244 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-11-19 23:53:36,405 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-11-19 23:53:36,416 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:53:36,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:53:36,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:53:36,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:53:36,418 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:53:36,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:53:36,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:53:36,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:53:36,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrcmp-alloca-2.i_Iteration1_Lasso [2019-11-19 23:53:36,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:53:36,419 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:53:36,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:36,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:36,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:36,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:36,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:36,904 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-11-19 23:53:37,114 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-19 23:53:37,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:53:37,890 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:53:37,895 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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 [2019-11-19 23:53:37,904 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 [2019-11-19 23:53:37,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:53:37,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:53:37,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:53:37,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:53:37,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:53:37,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:53:37,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:53:37,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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) [2019-11-19 23:53:37,937 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 [2019-11-19 23:53:37,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:53:37,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:53:37,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:53:37,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:53:37,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:53:37,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:53:37,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:53:37,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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 [2019-11-19 23:53:37,960 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 [2019-11-19 23:53:37,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:53:37,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:53:37,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:53:37,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:53:37,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:53:37,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:53:37,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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 [2019-11-19 23:53:37,982 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 [2019-11-19 23:53:37,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:53:37,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:53:37,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:53:37,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:53:37,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:53:37,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:53:37,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:53:37,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66f52171-ed17-4729-ba38-49a4dbe68e91/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) [2019-11-19 23:53:38,017 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 [2019-11-19 23:53:38,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:53:38,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:53:38,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:53:38,020 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 [2019-11-19 23:53:38,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:53:38,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:53:38,065 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:53:38,270 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2019-11-19 23:53:38,270 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_66f52171-ed17-4729-ba38-49a4dbe68e91/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) [2019-11-19 23:53:38,284 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 [2019-11-19 23:53:38,288 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-19 23:53:38,289 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:53:38,289 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 [] [2019-11-19 23:53:38,369 INFO L297 tatePredicateManager]: 14 out of 16 supporting invariants were superfluous and have been removed [2019-11-19 23:53:38,384 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-19 23:53:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:38,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 23:53:38,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:53:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:38,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 23:53:38,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:53:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:53:38,571 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 [2019-11-19 23:53:38,572 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2019-11-19 23:53:38,663 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. [2019-11-19 23:53:38,664 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 [2019-11-19 23:53:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:53:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-19 23:53:38,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-19 23:53:38,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:53:38,670 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 23:53:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:53:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:38,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-19 23:53:38,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:53:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:53:38,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 23:53:38,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:53:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:53:38,811 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 [2019-11-19 23:53:38,811 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2019-11-19 23:53:38,892 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. [2019-11-19 23:53:38,893 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 [2019-11-19 23:53:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:53:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2019-11-19 23:53:38,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-19 23:53:38,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:53:38,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-19 23:53:38,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:53:38,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-19 23:53:38,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:53:38,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-11-19 23:53:38,899 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:53:38,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2019-11-19 23:53:38,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:53:38,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:53:38,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:53:38,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:53:38,904 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:53:38,904 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:53:38,904 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:53:38,904 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:53:38,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:53:38,905 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:53:38,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:53:38,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:53:38 BoogieIcfgContainer [2019-11-19 23:53:38,911 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:53:38,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:53:38,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:53:38,912 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:53:38,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:53:35" (3/4) ... [2019-11-19 23:53:38,916 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:53:38,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:53:38,918 INFO L168 Benchmark]: Toolchain (without parser) took 4854.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 955.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 121.1 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:38,919 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:53:38,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:38,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.64 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. [2019-11-19 23:53:38,921 INFO L168 Benchmark]: Boogie Preprocessor took 27.40 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. [2019-11-19 23:53:38,922 INFO L168 Benchmark]: RCFGBuilder took 423.76 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:38,922 INFO L168 Benchmark]: BuchiAutomizer took 3729.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.6 MB in the end (delta: 142.1 MB). Peak memory consumption was 142.1 MB. Max. memory is 11.5 GB. [2019-11-19 23:53:38,923 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 1.2 GB. Free memory is still 955.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:53:38,926 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 621.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -180.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.64 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 27.40 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 423.76 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3729.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.6 MB in the end (delta: 142.1 MB). Peak memory consumption was 142.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.93 ms. Allocated memory is still 1.2 GB. Free memory is still 955.6 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 3.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. 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: 30ms 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...