./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 f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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-f470102 [2019-11-28 20:36:20,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:36:20,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:36:20,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:36:20,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:36:20,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:36:20,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:36:20,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:36:20,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:36:20,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:36:20,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:36:20,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:36:20,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:36:20,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:36:20,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:36:20,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:36:20,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:36:20,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:36:20,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:36:20,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:36:20,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:36:20,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:36:20,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:36:20,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:36:20,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:36:20,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:36:20,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:36:20,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:36:20,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:36:20,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:36:20,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:36:20,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:36:20,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:36:20,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:36:20,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:36:20,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:36:20,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:36:20,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:36:20,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:36:20,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:36:20,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:36:20,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:36:20,304 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:36:20,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:36:20,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:36:20,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:36:20,306 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:36:20,306 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:36:20,307 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:36:20,307 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:36:20,307 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:36:20,307 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:36:20,308 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:36:20,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:36:20,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:36:20,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:36:20,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:36:20,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:36:20,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:36:20,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:36:20,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:36:20,310 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:36:20,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:36:20,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:36:20,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:36:20,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:36:20,311 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:36:20,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:36:20,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:36:20,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:36:20,312 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:36:20,314 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:36:20,314 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 [2019-11-28 20:36:20,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:36:20,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:36:20,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:36:20,617 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:36:20,618 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:36:20,618 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-11-28 20:36:20,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d168798/e0daa758f6f848fca0de49173b21393f/FLAGba75d6cae [2019-11-28 20:36:21,222 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:36:21,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-11-28 20:36:21,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d168798/e0daa758f6f848fca0de49173b21393f/FLAGba75d6cae [2019-11-28 20:36:21,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d168798/e0daa758f6f848fca0de49173b21393f [2019-11-28 20:36:21,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:36:21,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:36:21,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:36:21,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:36:21,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:36:21,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:36:21" (1/1) ... [2019-11-28 20:36:21,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd431ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:21, skipping insertion in model container [2019-11-28 20:36:21,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:36:21" (1/1) ... [2019-11-28 20:36:21,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:36:21,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:36:22,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:36:22,064 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:36:22,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:36:22,177 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:36:22,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22 WrapperNode [2019-11-28 20:36:22,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:36:22,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:36:22,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:36:22,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:36:22,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:36:22,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:36:22,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:36:22,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:36:22,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (1/1) ... [2019-11-28 20:36:22,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:36:22,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:36:22,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:36:22,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:36:22,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (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 [2019-11-28 20:36:22,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:36:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:36:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:36:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:36:22,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:36:22,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:36:22,567 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:36:22,567 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 20:36:22,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:36:22 BoogieIcfgContainer [2019-11-28 20:36:22,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:36:22,569 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:36:22,569 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:36:22,573 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:36:22,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:36:22,574 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:36:21" (1/3) ... [2019-11-28 20:36:22,575 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a29cf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:36:22, skipping insertion in model container [2019-11-28 20:36:22,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:36:22,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:36:22" (2/3) ... [2019-11-28 20:36:22,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a29cf6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:36:22, skipping insertion in model container [2019-11-28 20:36:22,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:36:22,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:36:22" (3/3) ... [2019-11-28 20:36:22,578 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2019-11-28 20:36:22,630 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:36:22,631 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:36:22,631 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:36:22,631 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:36:22,631 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:36:22,631 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:36:22,631 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:36:22,632 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:36:22,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 20:36:22,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:36:22,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:36:22,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:36:22,700 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:36:22,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:36:22,703 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:36:22,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 20:36:22,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:36:22,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:36:22,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:36:22,707 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 20:36:22,707 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:36:22,720 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 13#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L367-3true [2019-11-28 20:36:22,721 INFO L796 eck$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 [2019-11-28 20:36:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-28 20:36:22,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:22,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166641838] [2019-11-28 20:36:22,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,920 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2019-11-28 20:36:22,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:22,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295658000] [2019-11-28 20:36:22,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,936 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:22,938 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2019-11-28 20:36:22,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:22,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632416383] [2019-11-28 20:36:22,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:22,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:23,271 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-11-28 20:36:23,352 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:36:23,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:36:23,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:36:23,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:36:23,355 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:36:23,355 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:36:23,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:36:23,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:36:23,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2019-11-28 20:36:23,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:36:23,356 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:36:23,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,598 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2019-11-28 20:36:23,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:23,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:36:24,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:36:24,070 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) [2019-11-28 20:36:24,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:36:24,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:36:24,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:36:24,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:36:24,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:36:24,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:36:24,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:36:24,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:36:24,098 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 [2019-11-28 20:36:24,110 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:36:24,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:36:24,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:36:24,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:36:24,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:36:24,123 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:36:24,124 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:36:24,137 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 [2019-11-28 20:36:24,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:36:24,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:36:24,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:36:24,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:36:24,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:36:24,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:36:24,159 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:36:24,164 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) [2019-11-28 20:36:24,180 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:36:24,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:36:24,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:36:24,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:36:24,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:36:24,196 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:36:24,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:36:24,218 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:36:24,325 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-28 20:36:24,325 INFO L444 ModelExtractionUtils]: 17 out of 28 variables were initially zero. Simplification set additionally 8 variables to zero. 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) [2019-11-28 20:36:24,354 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:36:24,357 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 20:36:24,358 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:36:24,359 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset) = 2*ULTIMATE.start_cstrlen_~p~0.offset + 1 Supporting invariants [] [2019-11-28 20:36:24,384 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 20:36:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:36:24,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:36:24,458 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:36:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:36:24,480 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:36:24,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:36:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:36:24,515 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 [2019-11-28 20:36:24,517 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-11-28 20:36:24,578 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 23 states and 26 transitions. Complement of second has 5 states. [2019-11-28 20:36:24,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:36:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:36:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-28 20:36:24,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 20:36:24,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:24,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 20:36:24,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:24,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 20:36:24,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:24,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2019-11-28 20:36:24,597 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:36:24,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2019-11-28 20:36:24,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:36:24,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:36:24,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:36:24,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:36:24,603 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:36:24,603 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:36:24,603 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:36:24,603 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:36:24,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:36:24,603 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:36:24,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:36:24,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:36:24 BoogieIcfgContainer [2019-11-28 20:36:24,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:36:24,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:36:24,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:36:24,613 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:36:24,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:36:22" (3/4) ... [2019-11-28 20:36:24,618 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:36:24,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:36:24,621 INFO L168 Benchmark]: Toolchain (without parser) took 3080.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 952.3 MB in the beginning and 916.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 182.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:24,622 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:36:24,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:24,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:36:24,626 INFO L168 Benchmark]: Boogie Preprocessor took 40.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:36:24,628 INFO L168 Benchmark]: RCFGBuilder took 286.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:24,630 INFO L168 Benchmark]: BuchiAutomizer took 2042.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 188.1 MB). Peak memory consumption was 188.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:24,631 INFO L168 Benchmark]: Witness Printer took 5.86 ms. Allocated memory is still 1.2 GB. Free memory is still 916.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:36:24,644 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 635.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2042.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 916.2 MB in the end (delta: 188.1 MB). Peak memory consumption was 188.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.86 ms. Allocated memory is still 1.2 GB. Free memory is still 916.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * 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 + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 9 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 2 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 ukn87 mio100 lsp50 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 6 VariablesLoop: 3 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...