./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 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-memory-alloca/openbsd_cstrnlen-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 20d74f4d70a20b55179c45eafbef37cbb7fed804 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:47:54,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:47:54,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:47:54,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:47:54,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:47:54,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:47:54,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:47:54,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:47:54,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:47:54,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:47:54,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:47:54,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:47:54,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:47:54,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:47:54,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:47:54,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:47:54,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:47:54,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:47:54,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:47:54,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:47:54,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:47:54,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:47:54,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:47:54,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:47:54,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:47:54,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:47:54,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:47:54,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:47:54,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:47:54,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:47:54,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:47:54,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:47:54,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:47:54,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:47:54,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:47:54,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:47:54,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:47:54,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:47:54,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:47:54,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:47:54,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:47:54,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:47:54,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:47:54,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:47:54,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:47:54,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:47:54,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:47:54,326 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:47:54,326 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:47:54,326 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:47:54,326 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:47:54,326 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:47:54,327 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:47:54,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:47:54,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:47:54,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:47:54,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:47:54,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:47:54,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:47:54,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:47:54,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:47:54,330 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:47:54,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:47:54,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:47:54,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:47:54,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:47:54,331 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:47:54,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:47:54,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:47:54,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:47:54,331 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:47:54,333 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:47:54,333 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 -> 20d74f4d70a20b55179c45eafbef37cbb7fed804 [2020-10-19 18:47:54,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:47:54,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:47:54,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:47:54,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:47:54,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:47:54,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i [2020-10-19 18:47:54,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eadaac3d/789191f2f2874190b4c5352d5a616cc2/FLAGb9196f663 [2020-10-19 18:47:55,198 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:47:55,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrnlen-alloca-2.i [2020-10-19 18:47:55,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eadaac3d/789191f2f2874190b4c5352d5a616cc2/FLAGb9196f663 [2020-10-19 18:47:55,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eadaac3d/789191f2f2874190b4c5352d5a616cc2 [2020-10-19 18:47:55,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:47:55,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:47:55,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:47:55,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:47:55,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:47:55,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:47:55" (1/1) ... [2020-10-19 18:47:55,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8ca250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:55, skipping insertion in model container [2020-10-19 18:47:55,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:47:55" (1/1) ... [2020-10-19 18:47:55,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:47:55,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:47:56,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:47:56,105 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:47:56,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:47:56,198 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:47:56,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56 WrapperNode [2020-10-19 18:47:56,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:47:56,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:47:56,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:47:56,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:47:56,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:47:56,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:47:56,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:47:56,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:47:56,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (1/1) ... [2020-10-19 18:47:56,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:47:56,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:47:56,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:47:56,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:47:56,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (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 [2020-10-19 18:47:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:47:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:47:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:47:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:47:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:47:56,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:47:56,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:47:56,620 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:47:56,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:47:56 BoogieIcfgContainer [2020-10-19 18:47:56,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:47:56,623 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:47:56,623 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:47:56,626 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:47:56,627 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:47:56,627 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:47:55" (1/3) ... [2020-10-19 18:47:56,628 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11afdf45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:47:56, skipping insertion in model container [2020-10-19 18:47:56,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:47:56,628 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:47:56" (2/3) ... [2020-10-19 18:47:56,629 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@11afdf45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:47:56, skipping insertion in model container [2020-10-19 18:47:56,629 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:47:56,629 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:47:56" (3/3) ... [2020-10-19 18:47:56,632 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-2.i [2020-10-19 18:47:56,682 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:47:56,682 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:47:56,683 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:47:56,683 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:47:56,683 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:47:56,683 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:47:56,684 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:47:56,684 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:47:56,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 18:47:56,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:47:56,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:47:56,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:47:56,723 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:47:56,723 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:47:56,723 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:47:56,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 18:47:56,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:47:56,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:47:56,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:47:56,726 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:47:56,726 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:47:56,732 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9, main_~length1~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := main_#t~nondet7;havoc main_#t~nondet7; 4#L558true assume !(main_~length1~0 < 1); 6#L558-2true assume !(main_~n~0 < 1); 15#L561-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrnlen_#in~str.base, cstrnlen_#in~str.offset, cstrnlen_#in~maxlen := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~n~0;havoc cstrnlen_#res;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset, cstrnlen_#t~post3, cstrnlen_#t~mem4, cstrnlen_#t~short5, cstrnlen_~str.base, cstrnlen_~str.offset, cstrnlen_~maxlen, cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~str.base, cstrnlen_~str.offset := cstrnlen_#in~str.base, cstrnlen_#in~str.offset;cstrnlen_~maxlen := cstrnlen_#in~maxlen;havoc cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_~str.base, cstrnlen_~str.offset; 7#L551-6true [2020-10-19 18:47:56,733 INFO L796 eck$LassoCheckResult]: Loop: 7#L551-6true cstrnlen_#t~short5 := 0 != cstrnlen_~maxlen % 4294967296; 14#L551-1true assume cstrnlen_#t~short5;call cstrnlen_#t~mem4 := read~int(cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset, 1);cstrnlen_#t~short5 := 0 != cstrnlen_#t~mem4; 3#L551-3true assume !!cstrnlen_#t~short5;havoc cstrnlen_#t~mem4;havoc cstrnlen_#t~short5; 5#L551-5true cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset := cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_#t~post2.base, 1 + cstrnlen_#t~post2.offset;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset;cstrnlen_#t~post3 := cstrnlen_~maxlen;cstrnlen_~maxlen := cstrnlen_#t~post3 - 1;havoc cstrnlen_#t~post3; 7#L551-6true [2020-10-19 18:47:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-10-19 18:47:56,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:47:56,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679026225] [2020-10-19 18:47:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:47:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:56,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:56,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:56,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:47:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1511654, now seen corresponding path program 1 times [2020-10-19 18:47:56,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:47:56,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830213929] [2020-10-19 18:47:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:47:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:56,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:56,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:56,974 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:47:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1298318251, now seen corresponding path program 1 times [2020-10-19 18:47:56,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:47:56,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383534796] [2020-10-19 18:47:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:47:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:57,014 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:57,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:57,051 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:47:57,174 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2020-10-19 18:47:57,433 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-19 18:47:57,526 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:47:57,527 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:47:57,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:47:57,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:47:57,528 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:47:57,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:47:57,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:47:57,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:47:57,529 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrnlen-alloca-2.i_Iteration1_Lasso [2020-10-19 18:47:57,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:47:57,530 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:47:57,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,786 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-19 18:47:57,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:57,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:47:58,380 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:47:58,387 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 [2020-10-19 18:47:58,398 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 [2020-10-19 18:47:58,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,410 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 [2020-10-19 18:47:58,452 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 [2020-10-19 18:47:58,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:47:58,512 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 [2020-10-19 18:47:58,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,518 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 [2020-10-19 18:47:58,541 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 [2020-10-19 18:47:58,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,556 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 [2020-10-19 18:47:58,586 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 [2020-10-19 18:47:58,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,593 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:47:58,593 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:47:58,598 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) [2020-10-19 18:47:58,635 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 [2020-10-19 18:47:58,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:47:58,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:47:58,658 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) [2020-10-19 18:47:58,693 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:47:58,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,698 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:47:58,699 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:47:58,703 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 [2020-10-19 18:47:58,745 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 [2020-10-19 18:47:58,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,751 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 [2020-10-19 18:47:58,778 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 [2020-10-19 18:47:58,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,784 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 [2020-10-19 18:47:58,807 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 [2020-10-19 18:47:58,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:47:58,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:47:58,814 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 [2020-10-19 18:47:58,848 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 [2020-10-19 18:47:58,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:47:58,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:47:58,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:47:58,855 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 [2020-10-19 18:47:58,888 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 [2020-10-19 18:47:58,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:47:58,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:47:58,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:47:58,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:47:58,907 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:47:58,907 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:47:58,926 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:47:58,965 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-10-19 18:47:58,966 INFO L444 ModelExtractionUtils]: 10 out of 28 variables were initially zero. Simplification set additionally 15 variables to zero. 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 [2020-10-19 18:47:58,997 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:47:59,005 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:47:59,006 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:47:59,006 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrnlen_~cp~0.base)_1, ULTIMATE.start_cstrnlen_~cp~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrnlen_~cp~0.base)_1 - 1*ULTIMATE.start_cstrnlen_~cp~0.offset Supporting invariants [] [2020-10-19 18:47:59,057 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 18:47:59,068 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-19 18:47:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:47:59,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:47:59,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:47:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:47:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:47:59,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:47:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:47:59,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:47:59,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2020-10-19 18:47:59,238 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 45 states and 53 transitions. Complement of second has 7 states. [2020-10-19 18:47:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:47:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:47:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2020-10-19 18:47:59,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 18:47:59,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:47:59,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-19 18:47:59,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:47:59,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-19 18:47:59,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:47:59,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 53 transitions. [2020-10-19 18:47:59,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:47:59,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 18 states and 23 transitions. [2020-10-19 18:47:59,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:47:59,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:47:59,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-10-19 18:47:59,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:47:59,259 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-19 18:47:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-10-19 18:47:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-19 18:47:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 18:47:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2020-10-19 18:47:59,293 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-10-19 18:47:59,293 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-10-19 18:47:59,293 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:47:59,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2020-10-19 18:47:59,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:47:59,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:47:59,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:47:59,295 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:47:59,295 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:47:59,295 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 133#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9, main_~length1~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := main_#t~nondet7;havoc main_#t~nondet7; 134#L558 assume !(main_~length1~0 < 1); 135#L558-2 assume !(main_~n~0 < 1); 139#L561-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrnlen_#in~str.base, cstrnlen_#in~str.offset, cstrnlen_#in~maxlen := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~n~0;havoc cstrnlen_#res;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset, cstrnlen_#t~post3, cstrnlen_#t~mem4, cstrnlen_#t~short5, cstrnlen_~str.base, cstrnlen_~str.offset, cstrnlen_~maxlen, cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~str.base, cstrnlen_~str.offset := cstrnlen_#in~str.base, cstrnlen_#in~str.offset;cstrnlen_~maxlen := cstrnlen_#in~maxlen;havoc cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_~str.base, cstrnlen_~str.offset; 144#L551-6 cstrnlen_#t~short5 := 0 != cstrnlen_~maxlen % 4294967296; 140#L551-1 [2020-10-19 18:47:59,296 INFO L796 eck$LassoCheckResult]: Loop: 140#L551-1 assume !cstrnlen_#t~short5; 129#L551-3 assume !!cstrnlen_#t~short5;havoc cstrnlen_#t~mem4;havoc cstrnlen_#t~short5; 130#L551-5 cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset := cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_#t~post2.base, 1 + cstrnlen_#t~post2.offset;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset;cstrnlen_#t~post3 := cstrnlen_~maxlen;cstrnlen_~maxlen := cstrnlen_#t~post3 - 1;havoc cstrnlen_#t~post3; 137#L551-6 cstrnlen_#t~short5 := 0 != cstrnlen_~maxlen % 4294967296; 140#L551-1 [2020-10-19 18:47:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:59,296 INFO L82 PathProgramCache]: Analyzing trace with hash 889572237, now seen corresponding path program 1 times [2020-10-19 18:47:59,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:47:59,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639100504] [2020-10-19 18:47:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:47:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:59,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:47:59,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:47:59,329 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:47:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:47:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1668346, now seen corresponding path program 1 times [2020-10-19 18:47:59,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:47:59,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889433501] [2020-10-19 18:47:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:47:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:47:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:47:59,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889433501] [2020-10-19 18:47:59,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:47:59,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:47:59,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93230025] [2020-10-19 18:47:59,371 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 18:47:59,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:47:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:47:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:47:59,375 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-10-19 18:47:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:47:59,396 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-10-19 18:47:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:47:59,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2020-10-19 18:47:59,399 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:47:59,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-10-19 18:47:59,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:47:59,400 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:47:59,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:47:59,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:47:59,400 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:47:59,400 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:47:59,400 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:47:59,401 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:47:59,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:47:59,403 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:47:59,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:47:59,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:47:59 BoogieIcfgContainer [2020-10-19 18:47:59,413 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:47:59,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:47:59,414 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:47:59,415 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:47:59,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:47:56" (3/4) ... [2020-10-19 18:47:59,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:47:59,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:47:59,439 INFO L168 Benchmark]: Toolchain (without parser) took 3871.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 960.0 MB in the beginning and 1.2 GB in the end (delta: -197.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,443 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:47:59,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -157.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.41 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,449 INFO L168 Benchmark]: Boogie Preprocessor took 28.28 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,450 INFO L168 Benchmark]: RCFGBuilder took 347.66 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,451 INFO L168 Benchmark]: BuchiAutomizer took 2791.06 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:47:59,452 INFO L168 Benchmark]: Witness Printer took 23.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:47:59,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 624.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -157.9 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.41 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.28 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 347.66 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2791.06 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -83.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 23.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[cp] + -1 * cp and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. 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 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 20 SDslu, 21 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital135 mio100 ax113 hnf99 lsp71 ukn91 mio100 lsp47 div125 bol100 ite100 ukn100 eq157 hnf84 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms 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...