./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:43:13,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:43:13,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:43:13,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:43:13,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:43:13,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:43:13,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:43:13,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:43:13,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:43:13,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:43:13,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:43:13,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:43:13,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:43:13,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:43:13,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:43:13,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:43:13,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:43:13,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:43:13,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:43:13,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:43:13,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:43:13,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:43:13,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:43:13,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:43:13,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:43:13,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:43:13,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:43:13,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:43:13,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:43:13,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:43:13,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:43:13,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:43:13,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:43:13,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:43:13,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:43:13,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:43:13,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:43:13,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:43:13,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:43:13,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:43:13,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:43:13,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:43:13,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:43:13,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:43:13,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:43:13,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:43:13,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:43:13,846 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:43:13,846 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:43:13,847 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:43:13,847 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:43:13,847 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:43:13,847 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:43:13,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:43:13,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:43:13,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:43:13,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:43:13,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:43:13,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:43:13,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:43:13,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:43:13,850 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:43:13,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:43:13,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:43:13,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:43:13,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:43:13,851 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:43:13,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:43:13,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:43:13,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:43:13,852 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:43:13,853 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:43:13,853 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 [2020-10-20 06:43:14,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:43:14,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:43:14,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:43:14,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:43:14,067 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:43:14,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2020-10-20 06:43:14,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d347463a/8c8bac6c2e014b649d149050d303ddc9/FLAG191bba815 [2020-10-20 06:43:14,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:43:14,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2020-10-20 06:43:14,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d347463a/8c8bac6c2e014b649d149050d303ddc9/FLAG191bba815 [2020-10-20 06:43:14,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d347463a/8c8bac6c2e014b649d149050d303ddc9 [2020-10-20 06:43:14,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:43:14,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:43:14,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:14,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:43:14,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:43:14,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:14" (1/1) ... [2020-10-20 06:43:14,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9ee007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:14, skipping insertion in model container [2020-10-20 06:43:14,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:14" (1/1) ... [2020-10-20 06:43:14,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:43:15,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:43:15,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:15,427 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:43:15,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:15,552 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:43:15,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15 WrapperNode [2020-10-20 06:43:15,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:15,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:15,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:43:15,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:43:15,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:15,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:43:15,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:43:15,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:43:15,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:43:15,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:43:15,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:43:15,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:43:15,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:15,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:43:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:43:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:43:15,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:43:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:43:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:43:15,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:43:15,925 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:43:15,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:15 BoogieIcfgContainer [2020-10-20 06:43:15,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:43:15,928 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:43:15,929 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:43:15,932 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:43:15,933 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:15,933 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:43:14" (1/3) ... [2020-10-20 06:43:15,934 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@80ce241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:15, skipping insertion in model container [2020-10-20 06:43:15,935 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:15,935 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15" (2/3) ... [2020-10-20 06:43:15,935 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@80ce241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:15, skipping insertion in model container [2020-10-20 06:43:15,936 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:15,936 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:15" (3/3) ... [2020-10-20 06:43:15,937 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2020-10-20 06:43:15,994 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:43:15,994 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:43:15,994 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:43:15,995 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:43:15,995 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:43:15,995 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:43:15,996 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:43:15,996 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:43:16,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-10-20 06:43:16,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:43:16,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:16,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:16,048 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:43:16,048 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:43:16,048 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:43:16,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-10-20 06:43:16,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:43:16,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:16,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:16,051 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:43:16,051 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:43:16,060 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 13#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L367-3true [2020-10-20 06:43:16,060 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 4#L367-1true assume !!(0 != cstrlen_#t~mem205);havoc cstrlen_#t~mem205;cstrlen_#t~post206.base, cstrlen_#t~post206.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post206.base, cstrlen_#t~post206.offset - 1;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 7#L367-3true [2020-10-20 06:43:16,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:16,067 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-20 06:43:16,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:16,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860994605] [2020-10-20 06:43:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,258 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2020-10-20 06:43:16,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:16,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685580267] [2020-10-20 06:43:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2020-10-20 06:43:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201632020] [2020-10-20 06:43:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,361 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:16,619 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-20 06:43:16,729 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:43:16,733 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:43:16,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:43:16,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:43:16,734 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:43:16,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:16,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:43:16,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:43:16,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2020-10-20 06:43:16,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:43:16,736 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:43:16,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:16,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:16,937 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-20 06:43:17,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:17,360 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:43:17,378 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:43:17,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:17,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:17,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:17,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:17,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:17,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:17,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:17,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:17,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:17,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:17,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:17,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:17,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:17,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:17,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:17,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:17,451 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:43:17,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:17,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:17,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:17,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:17,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:17,518 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:17,518 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:17,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:43:17,565 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-20 06:43:17,565 INFO L444 ModelExtractionUtils]: 6 out of 28 variables were initially zero. Simplification set additionally 19 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:17,570 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:17,574 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:43:17,574 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:43:17,575 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1) = 2*ULTIMATE.start_cstrlen_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1 Supporting invariants [] [2020-10-20 06:43:17,625 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 06:43:17,637 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 06:43:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:17,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:43:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:17,712 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:43:17,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:43:17,756 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:43:17,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2020-10-20 06:43:17,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 20 states and 23 transitions. Complement of second has 6 states. [2020-10-20 06:43:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:43:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:43:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:43:17,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:43:17,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:17,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:43:17,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:17,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-20 06:43:17,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:17,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-10-20 06:43:17,888 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:43:17,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2020-10-20 06:43:17,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:43:17,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:43:17,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:43:17,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:43:17,893 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:17,893 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:17,894 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:17,894 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:43:17,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:43:17,894 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:43:17,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:43:17,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:43:17 BoogieIcfgContainer [2020-10-20 06:43:17,901 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:43:17,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:43:17,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:43:17,902 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:43:17,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:15" (3/4) ... [2020-10-20 06:43:17,906 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:43:17,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:43:17,908 INFO L168 Benchmark]: Toolchain (without parser) took 2935.06 ms. Allocated memory was 35.1 MB in the beginning and 57.7 MB in the end (delta: 22.5 MB). Free memory was 13.7 MB in the beginning and 29.1 MB in the end (delta: -15.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,909 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 8.8 MB in the beginning and 8.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 573.96 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 12.9 MB in the beginning and 22.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 20.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,912 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 46.1 MB. Free memory was 20.7 MB in the beginning and 19.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,912 INFO L168 Benchmark]: RCFGBuilder took 299.07 ms. Allocated memory is still 46.1 MB. Free memory was 19.1 MB in the beginning and 20.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,913 INFO L168 Benchmark]: BuchiAutomizer took 1972.64 ms. Allocated memory was 46.1 MB in the beginning and 57.7 MB in the end (delta: 11.5 MB). Free memory was 20.6 MB in the beginning and 29.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,914 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 57.7 MB. Free memory was 29.6 MB in the beginning and 29.1 MB in the end (delta: 533.2 kB). Peak memory consumption was 533.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:43:17,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 8.8 MB in the beginning and 8.8 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 573.96 ms. Allocated memory was 35.1 MB in the beginning and 46.1 MB in the end (delta: 11.0 MB). Free memory was 12.9 MB in the beginning and 22.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 46.1 MB. Free memory was 22.6 MB in the beginning and 20.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 46.1 MB. Free memory was 20.7 MB in the beginning and 19.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 299.07 ms. Allocated memory is still 46.1 MB. Free memory was 19.1 MB in the beginning and 20.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1972.64 ms. Allocated memory was 46.1 MB in the beginning and 57.7 MB in the end (delta: 11.5 MB). Free memory was 20.6 MB in the beginning and 29.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.77 ms. Allocated memory is still 57.7 MB. Free memory was 29.6 MB in the beginning and 29.1 MB in the end (delta: 533.2 kB). Peak memory consumption was 533.2 kB. Max. memory is 14.3 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 2 * p + unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. 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: 6 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital119 mio100 ax100 hnf99 lsp94 ukn90 mio100 lsp48 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms 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...