./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 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-memory-alloca/openbsd_cstrcmp-alloca-2.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 c1eb142aa621a3b7c962754bdbb3857cadaf1720 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:40:45,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:40:45,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:40:45,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:40:45,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:40:45,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:40:45,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:40:45,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:40:45,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:40:45,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:40:45,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:40:45,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:40:45,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:40:45,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:40:45,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:40:45,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:40:45,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:40:45,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:40:45,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:40:45,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:40:45,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:40:45,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:40:45,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:40:45,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:40:45,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:40:45,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:40:45,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:40:45,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:40:45,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:40:45,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:40:45,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:40:45,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:40:45,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:40:45,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:40:45,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:40:45,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:40:45,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:40:45,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:40:45,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:40:45,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:40:45,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:40:45,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:40:46,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:40:46,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:40:46,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:40:46,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:40:46,036 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:40:46,036 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:40:46,036 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:40:46,036 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:40:46,037 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:40:46,037 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:40:46,037 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:40:46,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:40:46,037 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:40:46,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:40:46,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:40:46,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:40:46,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:40:46,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:40:46,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:40:46,040 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:40:46,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:40:46,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:40:46,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:40:46,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:40:46,041 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:40:46,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:40:46,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:40:46,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:40:46,043 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:40:46,044 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:40:46,044 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 -> c1eb142aa621a3b7c962754bdbb3857cadaf1720 [2020-10-20 06:40:46,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:40:46,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:40:46,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:40:46,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:40:46,283 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:40:46,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2020-10-20 06:40:46,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5c5e9ad/0bc4038f46a04af58b718ccd52f014a2/FLAG699f46762 [2020-10-20 06:40:46,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:40:46,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcmp-alloca-2.i [2020-10-20 06:40:46,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5c5e9ad/0bc4038f46a04af58b718ccd52f014a2/FLAG699f46762 [2020-10-20 06:40:47,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce5c5e9ad/0bc4038f46a04af58b718ccd52f014a2 [2020-10-20 06:40:47,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:40:47,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:40:47,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:40:47,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:40:47,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:40:47,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d1a1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47, skipping insertion in model container [2020-10-20 06:40:47,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:40:47,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:40:47,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:40:47,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:40:47,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:40:47,817 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:40:47,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47 WrapperNode [2020-10-20 06:40:47,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:40:47,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:40:47,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:40:47,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:40:47,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:40:47,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:40:47,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:40:47,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:40:47,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (1/1) ... [2020-10-20 06:40:47,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:40:47,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:40:47,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:40:47,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:40:47,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (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 06:40:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:40:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:40:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:40:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:40:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:40:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:40:48,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:40:48,279 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:40:48,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:40:48 BoogieIcfgContainer [2020-10-20 06:40:48,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:40:48,282 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:40:48,282 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:40:48,286 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:40:48,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:40:48,287 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:40:47" (1/3) ... [2020-10-20 06:40:48,288 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f0d864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:40:48, skipping insertion in model container [2020-10-20 06:40:48,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:40:48,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:40:47" (2/3) ... [2020-10-20 06:40:48,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f0d864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:40:48, skipping insertion in model container [2020-10-20 06:40:48,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:40:48,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:40:48" (3/3) ... [2020-10-20 06:40:48,291 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-2.i [2020-10-20 06:40:48,335 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:40:48,335 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:40:48,336 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:40:48,336 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:40:48,336 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:40:48,337 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:40:48,337 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:40:48,337 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:40:48,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 06:40:48,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:40:48,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:40:48,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:40:48,377 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:40:48,377 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:40:48,377 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:40:48,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 06:40:48,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:40:48,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:40:48,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:40:48,379 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:40:48,380 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:40:48,386 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 3#L558true assume !(main_~length1~0 < 1); 7#L558-2true assume !(main_~length2~0 < 1); 13#L561-1true call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset, cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrcmp_#res;havoc cstrcmp_#t~post5.base, cstrcmp_#t~post5.offset, cstrcmp_#t~mem6, cstrcmp_#t~mem3, cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset, cstrcmp_#t~mem4, cstrcmp_#t~mem8, cstrcmp_#t~pre7.base, cstrcmp_#t~pre7.offset, cstrcmp_#t~mem9, cstrcmp_~s1.base, cstrcmp_~s1.offset, cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s1.base, cstrcmp_~s1.offset := cstrcmp_#in~s1.base, cstrcmp_#in~s1.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#in~s2.base, cstrcmp_#in~s2.offset; 4#L550-3true [2020-10-20 06:40:48,387 INFO L796 eck$LassoCheckResult]: Loop: 4#L550-3true call cstrcmp_#t~mem3 := read~int(cstrcmp_~s1.base, cstrcmp_~s1.offset, 1);cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset := cstrcmp_~s2.base, cstrcmp_~s2.offset;cstrcmp_~s2.base, cstrcmp_~s2.offset := cstrcmp_#t~post2.base, 1 + cstrcmp_#t~post2.offset;call cstrcmp_#t~mem4 := read~int(cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset, 1); 15#L550-1true assume !!(cstrcmp_#t~mem3 == cstrcmp_#t~mem4);havoc cstrcmp_#t~mem3;havoc cstrcmp_#t~mem4;havoc cstrcmp_#t~post2.base, cstrcmp_#t~post2.offset;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 [2020-10-20 06:40:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:40:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-10-20 06:40:48,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:40:48,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659022725] [2020-10-20 06:40:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:40:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,590 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:40:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:40:48,592 INFO L82 PathProgramCache]: Analyzing trace with hash 49816, now seen corresponding path program 1 times [2020-10-20 06:40:48,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:40:48,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570026957] [2020-10-20 06:40:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:40:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,636 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:40:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:40:48,638 INFO L82 PathProgramCache]: Analyzing trace with hash 180429619, now seen corresponding path program 1 times [2020-10-20 06:40:48,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:40:48,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433130822] [2020-10-20 06:40:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:40:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:40:48,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:40:48,803 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:40:48,985 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-20 06:40:49,381 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2020-10-20 06:40:49,497 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-20 06:40:49,511 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:40:49,512 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:40:49,512 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:40:49,512 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:40:49,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:40:49,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:49,513 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:40:49,513 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:40:49,513 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrcmp-alloca-2.i_Iteration1_Lasso [2020-10-20 06:40:49,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:40:49,514 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:40:49,555 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 06:40:49,564 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 06:40:49,567 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 06:40:49,577 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 06:40:49,582 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 06:40:49,586 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 06:40:49,589 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 06:40:49,592 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 06:40:49,606 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 06:40:49,610 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 06:40:49,613 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 06:40:49,617 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 06:40:49,620 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 06:40:49,999 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-20 06:40:50,180 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-20 06:40:50,182 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 06:40:50,185 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 06:40:50,188 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 06:40:50,191 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 06:40:50,194 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 06:40:50,197 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 06:40:50,200 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 06:40:50,203 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 06:40:50,207 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 06:40:50,363 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-20 06:40:50,895 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:40:50,900 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 06:40:50,905 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 06:40:50,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:50,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:50,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:50,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:50,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:50,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:50,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:50,927 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:50,956 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 06:40:50,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:50,957 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:50,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:50,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:50,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:50,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:50,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:50,971 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) [2020-10-20 06:40:51,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:40:51,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:40:51,015 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,041 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 06:40:51,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,047 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,076 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 06:40:51,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,087 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:40:51,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:40:51,100 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 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,124 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 06:40:51,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,139 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 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,169 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 06:40:51,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,185 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 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,216 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 06:40:51,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,220 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:40:51,220 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:40:51,224 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 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,248 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 06:40:51,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,252 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,275 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 06:40:51,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,281 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 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,307 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 06:40:51,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,311 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 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,340 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 06:40:51,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:40:51,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:40:51,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:40:51,349 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 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,371 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 06:40:51,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:40:51,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:40:51,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:40:51,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:40:51,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:40:51,390 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:40:51,413 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:40:51,493 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-20 06:40:51,493 INFO L444 ModelExtractionUtils]: 27 out of 46 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:40:51,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:40:51,521 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:40:51,521 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:40:51,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrcmp_~s2.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1) = -1*ULTIMATE.start_cstrcmp_~s2.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1 Supporting invariants [] [2020-10-20 06:40:51,706 INFO L297 tatePredicateManager]: 14 out of 16 supporting invariants were superfluous and have been removed [2020-10-20 06:40:51,720 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 06:40:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:40:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:40:51,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 06:40:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:40:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:40:51,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:40:51,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:40:51,909 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 06:40:51,930 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 [2020-10-20 06:40:51,931 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-10-20 06:40:52,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 22 states and 28 transitions. Complement of second has 5 states. [2020-10-20 06:40:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 0 non-accepting loop states 2 accepting loop states [2020-10-20 06:40:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:40:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-20 06:40:52,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:40:52,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:40:52,020 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:40:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:40:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:40:52,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 06:40:52,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:40:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:40:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:40:52,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:40:52,154 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 06:40:52,155 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:40:52,155 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-10-20 06:40:52,238 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 25 states and 30 transitions. Complement of second has 10 states. [2020-10-20 06:40:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:40:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:40:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2020-10-20 06:40:52,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-10-20 06:40:52,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:40:52,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2020-10-20 06:40:52,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:40:52,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2020-10-20 06:40:52,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:40:52,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2020-10-20 06:40:52,245 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:40:52,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2020-10-20 06:40:52,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:40:52,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:40:52,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:40:52,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:40:52,249 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:40:52,249 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:40:52,249 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:40:52,249 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:40:52,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:40:52,250 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:40:52,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:40:52,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:40:52 BoogieIcfgContainer [2020-10-20 06:40:52,255 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:40:52,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:40:52,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:40:52,255 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:40:52,256 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:40:48" (3/4) ... [2020-10-20 06:40:52,259 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:40:52,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:40:52,261 INFO L168 Benchmark]: Toolchain (without parser) took 5065.05 ms. Allocated memory was 35.1 MB in the beginning and 71.8 MB in the end (delta: 36.7 MB). Free memory was 10.9 MB in the beginning and 46.6 MB in the end (delta: -35.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,261 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.40 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 10.0 MB in the beginning and 24.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.77 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,264 INFO L168 Benchmark]: Boogie Preprocessor took 26.57 ms. Allocated memory is still 45.1 MB. Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,265 INFO L168 Benchmark]: RCFGBuilder took 376.77 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 21.1 MB in the beginning and 19.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,266 INFO L168 Benchmark]: BuchiAutomizer took 3972.74 ms. Allocated memory was 45.6 MB in the beginning and 71.8 MB in the end (delta: 26.2 MB). Free memory was 19.4 MB in the beginning and 47.4 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:40:52,266 INFO L168 Benchmark]: Witness Printer took 4.04 ms. Allocated memory is still 71.8 MB. Free memory was 47.4 MB in the beginning and 46.6 MB in the end (delta: 788.6 kB). Peak memory consumption was 788.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:40:52,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 18.1 MB in the beginning and 18.1 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 613.40 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 10.0 MB in the beginning and 24.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 58.77 ms. Allocated memory is still 45.1 MB. Free memory was 24.6 MB in the beginning and 22.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.57 ms. Allocated memory is still 45.1 MB. Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 376.77 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 21.1 MB in the beginning and 19.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3972.74 ms. Allocated memory was 45.6 MB in the beginning and 71.8 MB in the end (delta: 26.2 MB). Free memory was 19.4 MB in the beginning and 47.4 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.04 ms. Allocated memory is still 71.8 MB. Free memory was 47.4 MB in the beginning and 46.6 MB in the end (delta: 788.6 kB). Peak memory consumption was 788.6 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 -1 * s2 + unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] and consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 16 SDslu, 6 SDs, 0 SdLazy, 22 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital209 mio100 ax108 hnf99 lsp89 ukn86 mio100 lsp47 div100 bol100 ite100 ukn100 eq195 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms 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...