./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/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_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/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-cad4683 [2019-11-15 19:46:12,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 19:46:12,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 19:46:12,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 19:46:12,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 19:46:12,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 19:46:12,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 19:46:12,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 19:46:12,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 19:46:12,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 19:46:12,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 19:46:12,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 19:46:12,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 19:46:12,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 19:46:12,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 19:46:12,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 19:46:12,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 19:46:12,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 19:46:12,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 19:46:12,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 19:46:12,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 19:46:12,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 19:46:12,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 19:46:12,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 19:46:13,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 19:46:13,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 19:46:13,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 19:46:13,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 19:46:13,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 19:46:13,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 19:46:13,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 19:46:13,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 19:46:13,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 19:46:13,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 19:46:13,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 19:46:13,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 19:46:13,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 19:46:13,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 19:46:13,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 19:46:13,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 19:46:13,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 19:46:13,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 19:46:13,032 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 19:46:13,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 19:46:13,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 19:46:13,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 19:46:13,034 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 19:46:13,035 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 19:46:13,035 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 19:46:13,036 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 19:46:13,036 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 19:46:13,036 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 19:46:13,036 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 19:46:13,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 19:46:13,037 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 19:46:13,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 19:46:13,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 19:46:13,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 19:46:13,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 19:46:13,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 19:46:13,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 19:46:13,039 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 19:46:13,039 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 19:46:13,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 19:46:13,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 19:46:13,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 19:46:13,040 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 19:46:13,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 19:46:13,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 19:46:13,041 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 19:46:13,042 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 19:46:13,042 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_fe61421b-73eb-4d70-ac96-5bcf70ea850d/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 [2019-11-15 19:46:13,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 19:46:13,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 19:46:13,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 19:46:13,092 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 19:46:13,093 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 19:46:13,094 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-15 19:46:13,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/data/e93359516/f1f8b6efc1b64ae9a1faf8a5833e5e1f/FLAG953c501e4 [2019-11-15 19:46:13,651 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 19:46:13,652 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2019-11-15 19:46:13,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/data/e93359516/f1f8b6efc1b64ae9a1faf8a5833e5e1f/FLAG953c501e4 [2019-11-15 19:46:14,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/bin/uautomizer/data/e93359516/f1f8b6efc1b64ae9a1faf8a5833e5e1f [2019-11-15 19:46:14,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 19:46:14,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 19:46:14,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 19:46:14,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 19:46:14,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 19:46:14,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181d3f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14, skipping insertion in model container [2019-11-15 19:46:14,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,030 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 19:46:14,097 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 19:46:14,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:46:14,506 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 19:46:14,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:46:14,602 INFO L192 MainTranslator]: Completed translation [2019-11-15 19:46:14,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14 WrapperNode [2019-11-15 19:46:14,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 19:46:14,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 19:46:14,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 19:46:14,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 19:46:14,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 19:46:14,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 19:46:14,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 19:46:14,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 19:46:14,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... [2019-11-15 19:46:14,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 19:46:14,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 19:46:14,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 19:46:14,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 19:46:14,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fe61421b-73eb-4d70-ac96-5bcf70ea850d/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 [2019-11-15 19:46:14,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 19:46:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 19:46:14,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 19:46:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 19:46:14,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 19:46:14,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 19:46:15,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 19:46:15,055 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 19:46:15,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:46:15 BoogieIcfgContainer [2019-11-15 19:46:15,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 19:46:15,057 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 19:46:15,057 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 19:46:15,061 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 19:46:15,062 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 19:46:15,062 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 07:46:14" (1/3) ... [2019-11-15 19:46:15,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21db5674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 07:46:15, skipping insertion in model container [2019-11-15 19:46:15,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 19:46:15,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:46:14" (2/3) ... [2019-11-15 19:46:15,064 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@21db5674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 07:46:15, skipping insertion in model container [2019-11-15 19:46:15,064 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 19:46:15,064 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:46:15" (3/3) ... [2019-11-15 19:46:15,066 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-2.i [2019-11-15 19:46:15,129 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 19:46:15,129 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 19:46:15,129 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 19:46:15,129 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 19:46:15,129 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 19:46:15,130 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 19:46:15,130 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 19:46:15,130 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 19:46:15,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-15 19:46:15,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 19:46:15,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 19:46:15,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 19:46:15,176 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 19:46:15,176 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 19:46:15,177 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 19:46:15,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-15 19:46:15,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 19:46:15,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 19:46:15,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 19:46:15,179 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 19:46:15,179 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 19:46:15,187 INFO L791 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 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 [2019-11-15 19:46:15,187 INFO L793 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~post2.base, cstrcmp_#t~post2.offset;havoc cstrcmp_#t~mem3;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~post5.base, cstrcmp_#t~post5.offset;havoc cstrcmp_#t~mem6; 4#L550-3true [2019-11-15 19:46:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:46:15,193 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-11-15 19:46:15,202 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:46:15,202 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260520369] [2019-11-15 19:46:15,203 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,203 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:46:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,354 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 19:46:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:46:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 49816, now seen corresponding path program 1 times [2019-11-15 19:46:15,355 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:46:15,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599198567] [2019-11-15 19:46:15,355 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,356 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:46:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,386 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 19:46:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:46:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash 180429619, now seen corresponding path program 1 times [2019-11-15 19:46:15,389 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:46:15,389 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9408652] [2019-11-15 19:46:15,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:46:15,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:46:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 19:46:15,486 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 19:46:15,724 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-11-15 19:46:16,186 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2019-11-15 19:46:16,331 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-11-15 19:46:16,344 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 19:46:16,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 19:46:16,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 19:46:16,347 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 19:46:16,347 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 19:46:16,347 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 19:46:16,347 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 19:46:16,348 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 19:46:16,348 INFO L131 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrcmp-alloca-2.i_Iteration1_Lasso [2019-11-15 19:46:16,348 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 19:46:16,349 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 19:46:16,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:16,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:16,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:16,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:16,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:16,876 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2019-11-15 19:46:17,099 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-15 19:46:17,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:17,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 19:46:18,118 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-11-15 19:46:18,266 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 19:46:18,271 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 19:46:18,273 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 [2019-11-15 19:46:18,275 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 19:46:18,276 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 19:46:18,277 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 19:46:18,277 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 19:46:18,277 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 19:46:18,279 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 19:46:18,279 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 19:46:18,281 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 19:46:18,282 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 [2019-11-15 19:46:18,283 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 19:46:18,283 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 19:46:18,283 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 19:46:18,284 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 19:46:18,284 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 19:46:18,284 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 19:46:18,285 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 19:46:18,286 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 19:46:18,286 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 [2019-11-15 19:46:18,287 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 19:46:18,287 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 19:46:18,288 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 19:46:18,288 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 19:46:18,291 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 19:46:18,291 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 19:46:18,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 19:46:18,296 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 [2019-11-15 19:46:18,297 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 19:46:18,297 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 19:46:18,297 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 19:46:18,298 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 19:46:18,298 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 19:46:18,298 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 19:46:18,299 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 19:46:18,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 19:46:18,300 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 [2019-11-15 19:46:18,301 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 19:46:18,302 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 19:46:18,302 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 19:46:18,302 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 19:46:18,316 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 19:46:18,317 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 19:46:18,505 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 19:46:18,642 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 19:46:18,643 INFO L444 ModelExtractionUtils]: 39 out of 46 variables were initially zero. Simplification set additionally 4 variables to zero. [2019-11-15 19:46:18,646 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 19:46:18,651 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 19:46:18,652 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 19:46:18,653 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrcmp_~s2.base)_1, ULTIMATE.start_cstrcmp_~s1.offset) = 1*v_rep(select #length ULTIMATE.start_cstrcmp_~s2.base)_1 - 1*ULTIMATE.start_cstrcmp_~s1.offset Supporting invariants [] [2019-11-15 19:46:18,712 INFO L297 tatePredicateManager]: 15 out of 16 supporting invariants were superfluous and have been removed [2019-11-15 19:46:18,722 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-15 19:46:18,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:46:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:46:18,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 19:46:18,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:46:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:46:18,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 19:46:18,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:46:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:46:18,878 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 [2019-11-15 19:46:18,879 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2019-11-15 19:46:18,979 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 28 states and 34 transitions. Complement of second has 7 states. [2019-11-15 19:46:18,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 19:46:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 19:46:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-15 19:46:18,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 19:46:18,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 19:46:18,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 19:46:18,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 19:46:18,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 19:46:18,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 19:46:18,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2019-11-15 19:46:19,002 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 19:46:19,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2019-11-15 19:46:19,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 19:46:19,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 19:46:19,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 19:46:19,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 19:46:19,008 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 19:46:19,008 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 19:46:19,008 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 19:46:19,009 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 19:46:19,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 19:46:19,009 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 19:46:19,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 19:46:19,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 07:46:19 BoogieIcfgContainer [2019-11-15 19:46:19,017 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 19:46:19,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 19:46:19,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 19:46:19,018 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 19:46:19,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:46:15" (3/4) ... [2019-11-15 19:46:19,022 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 19:46:19,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 19:46:19,025 INFO L168 Benchmark]: Toolchain (without parser) took 5015.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.6 MB in the beginning and 945.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 135.8 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,025 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 963.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:46:19,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.79 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,028 INFO L168 Benchmark]: Boogie Preprocessor took 27.43 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,030 INFO L168 Benchmark]: RCFGBuilder took 378.87 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,030 INFO L168 Benchmark]: BuchiAutomizer took 3959.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.2 MB in the end (delta: 154.1 MB). Peak memory consumption was 154.1 MB. Max. memory is 11.5 GB. [2019-11-15 19:46:19,031 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 1.2 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:46:19,039 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 963.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 592.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.79 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: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.43 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 378.87 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: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3959.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 945.2 MB in the end (delta: 154.1 MB). Peak memory consumption was 154.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.47 ms. Allocated memory is still 1.2 GB. Free memory is still 945.2 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 unknown-#length-unknown[s2] + -1 * s1 and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 12 SDslu, 12 SDs, 0 SdLazy, 7 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital214 mio100 ax108 hnf99 lsp89 ukn86 mio100 lsp46 div100 bol100 ite100 ukn100 eq195 hnf88 smp100 dnf166 smp97 tf100 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms 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...