./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrcat_diffterm_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/cstrcat_diffterm_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 6a26bec8435101bdbb43abb11ad0cdd911d4601c ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:42:40,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:42:40,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:42:40,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:42:40,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:42:40,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:42:40,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:42:40,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:42:40,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:42:40,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:42:40,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:42:40,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:42:40,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:42:40,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:42:40,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:42:40,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:42:40,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:42:40,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:42:40,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:42:40,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:42:40,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:42:40,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:42:40,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:42:40,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:42:40,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:42:40,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:42:40,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:42:40,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:42:40,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:42:40,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:42:40,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:42:40,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:42:40,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:42:40,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:42:40,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:42:40,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:42:40,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:42:40,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:42:40,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:42:40,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:42:40,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:42:40,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:42:40,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:42:40,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:42:40,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:42:40,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:42:40,489 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:42:40,490 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:42:40,490 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:42:40,490 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:42:40,490 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:42:40,491 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:42:40,491 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:42:40,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:42:40,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:42:40,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:42:40,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:42:40,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:42:40,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:42:40,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:42:40,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:42:40,493 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:42:40,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:42:40,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:42:40,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:42:40,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:42:40,494 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:42:40,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:42:40,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:42:40,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:42:40,495 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:42:40,496 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:42:40,497 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 -> 6a26bec8435101bdbb43abb11ad0cdd911d4601c [2020-10-20 06:42:40,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:42:40,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:42:40,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:42:40,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:42:40,702 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:42:40,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrcat_diffterm_alloca.i [2020-10-20 06:42:40,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63adeb521/f806cec2e5724f0cb1078cacfadb3299/FLAGacd1ed75e [2020-10-20 06:42:41,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:42:41,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrcat_diffterm_alloca.i [2020-10-20 06:42:41,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63adeb521/f806cec2e5724f0cb1078cacfadb3299/FLAGacd1ed75e [2020-10-20 06:42:41,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63adeb521/f806cec2e5724f0cb1078cacfadb3299 [2020-10-20 06:42:41,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:42:41,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:42:41,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:42:41,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:42:41,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:42:41,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:42:41" (1/1) ... [2020-10-20 06:42:41,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0fde21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:41, skipping insertion in model container [2020-10-20 06:42:41,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:42:41" (1/1) ... [2020-10-20 06:42:41,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:42:41,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:42:42,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:42:42,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:42:42,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:42:42,258 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:42:42,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42 WrapperNode [2020-10-20 06:42:42,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:42:42,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:42:42,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:42:42,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:42:42,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:42:42,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:42:42,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:42:42,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:42:42,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... [2020-10-20 06:42:42,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:42:42,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:42:42,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:42:42,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:42:42,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:42:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:42:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:42:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:42:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:42:42,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:42:42,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:42:42,732 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 06:42:42,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:42 BoogieIcfgContainer [2020-10-20 06:42:42,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:42:42,734 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:42:42,735 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:42:42,738 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:42:42,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:42,739 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:42:41" (1/3) ... [2020-10-20 06:42:42,740 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d846732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:42:42, skipping insertion in model container [2020-10-20 06:42:42,740 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:42,740 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:42" (2/3) ... [2020-10-20 06:42:42,741 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d846732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:42:42, skipping insertion in model container [2020-10-20 06:42:42,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:42,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:42" (3/3) ... [2020-10-20 06:42:42,743 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrcat_diffterm_alloca.i [2020-10-20 06:42:42,788 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:42:42,789 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:42:42,789 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:42:42,789 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:42:42,790 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:42:42,790 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:42:42,790 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:42:42,790 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:42:42,805 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 06:42:42,823 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 06:42:42,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:42:42,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:42:42,828 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:42:42,829 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:42:42,829 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:42:42,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 06:42:42,830 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 06:42:42,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:42:42,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:42:42,831 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:42:42,831 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:42:42,838 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet210, main_#t~nondet211, main_#t~nondet212, main_#t~malloc213.base, main_#t~malloc213.offset, main_#t~malloc214.base, main_#t~malloc214.offset, main_#t~ret215.base, main_#t~ret215.offset, main_~length1~0, main_~length2~0, main_~length3~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet210;havoc main_#t~nondet210;main_~length2~0 := main_#t~nondet211;havoc main_#t~nondet211;main_~length3~0 := main_#t~nondet212;havoc main_#t~nondet212; 3#L377true assume !(main_~length1~0 < 1); 6#L377-2true assume !(main_~length2~0 < 2); 15#L380-1true assume !(main_~length3~0 < 1); 9#L383-1true assume !(main_~length2~0 - main_~length3~0 < main_~length1~0 || main_~length3~0 > main_~length2~0);call main_#t~malloc213.base, main_#t~malloc213.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc213.base, main_#t~malloc213.offset;call main_#t~malloc214.base, main_#t~malloc214.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc214.base, main_#t~malloc214.offset;call write~int(49, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(49, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length3~0 - 1), 1);cstrcat_#in~s1.base, cstrcat_#in~s1.offset, cstrcat_#in~s2.base, cstrcat_#in~s2.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrcat_#res.base, cstrcat_#res.offset;havoc cstrcat_#t~post206.base, cstrcat_#t~post206.offset, cstrcat_#t~mem205, cstrcat_#t~post207.base, cstrcat_#t~post207.offset, cstrcat_#t~post208.base, cstrcat_#t~post208.offset, cstrcat_#t~mem209, cstrcat_~s1.base, cstrcat_~s1.offset, cstrcat_~s2.base, cstrcat_~s2.offset, cstrcat_~s~0.base, cstrcat_~s~0.offset;cstrcat_~s1.base, cstrcat_~s1.offset := cstrcat_#in~s1.base, cstrcat_#in~s1.offset;cstrcat_~s2.base, cstrcat_~s2.offset := cstrcat_#in~s2.base, cstrcat_#in~s2.offset;cstrcat_~s~0.base, cstrcat_~s~0.offset := cstrcat_~s1.base, cstrcat_~s1.offset; 7#L367-3true [2020-10-20 06:42:42,838 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrcat_#t~mem205 := read~int(cstrcat_~s~0.base, cstrcat_~s~0.offset, 1); 4#L367-1true assume !!(49 != cstrcat_#t~mem205);havoc cstrcat_#t~mem205;cstrcat_#t~post206.base, cstrcat_#t~post206.offset := cstrcat_~s~0.base, cstrcat_~s~0.offset;cstrcat_~s~0.base, cstrcat_~s~0.offset := cstrcat_#t~post206.base, 1 + cstrcat_#t~post206.offset;havoc cstrcat_#t~post206.base, cstrcat_#t~post206.offset; 7#L367-3true [2020-10-20 06:42:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-10-20 06:42:42,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:42,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106348896] [2020-10-20 06:42:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:42,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:43,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,052 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2020-10-20 06:42:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:43,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105162692] [2020-10-20 06:42:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:43,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:43,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,068 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:43,069 INFO L82 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2020-10-20 06:42:43,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:43,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411061236] [2020-10-20 06:42:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:43,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:43,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:43,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:43,667 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2020-10-20 06:42:43,792 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-20 06:42:43,806 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:42:43,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:42:43,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:42:43,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:42:43,809 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:42:43,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:43,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:42:43,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:42:43,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrcat_diffterm_alloca.i_Iteration1_Lasso [2020-10-20 06:42:43,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:42:43,811 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:42:43,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:43,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:43,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:43,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:43,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,182 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-20 06:42:44,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:42:44,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:42:44,770 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:42:44,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:42:44,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:42:44,791 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,823 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,828 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:44,828 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:44,832 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:42:44,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,869 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:42:44,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:42:44,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,875 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) [2020-10-20 06:42:44,908 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:42:44,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:42:44,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,947 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:44,948 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:44,952 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:44,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:44,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:44,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:44,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:44,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:44,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:44,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:44,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:45,014 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:42:45,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:45,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:45,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:45,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:45,022 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:45,022 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:45,033 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) [2020-10-20 06:42:45,072 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:45,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:45,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:45,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:45,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:45,086 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:45,087 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:45,105 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:42:45,302 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-10-20 06:42:45,303 INFO L444 ModelExtractionUtils]: 38 out of 49 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:42:45,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:45,320 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:42:45,320 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:42:45,321 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc214.base)_1, ULTIMATE.start_cstrcat_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc214.base)_1 - 1*ULTIMATE.start_cstrcat_~s~0.offset Supporting invariants [] [2020-10-20 06:42:45,396 INFO L297 tatePredicateManager]: 8 out of 9 supporting invariants were superfluous and have been removed [2020-10-20 06:42:45,406 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 06:42:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:42:45,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:42:45,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:42:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:42:45,499 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:42:45,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:42:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:42:45,537 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:42:45,538 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-10-20 06:42:45,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 8 states. [2020-10-20 06:42:45,641 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 [2020-10-20 06:42:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:42:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2020-10-20 06:42:45,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:42:45,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:45,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:42:45,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:45,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:42:45,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:45,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2020-10-20 06:42:45,658 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:42:45,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-10-20 06:42:45,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:42:45,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:42:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:42:45,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:42:45,664 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:45,664 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:45,665 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:45,665 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:42:45,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:42:45,665 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:42:45,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:42:45,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:42:45 BoogieIcfgContainer [2020-10-20 06:42:45,673 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:42:45,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:42:45,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:42:45,676 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:42:45,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:42" (3/4) ... [2020-10-20 06:42:45,687 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:42:45,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:42:45,690 INFO L168 Benchmark]: Toolchain (without parser) took 4064.70 ms. Allocated memory was 42.5 MB in the beginning and 62.4 MB in the end (delta: 19.9 MB). Free memory was 21.8 MB in the beginning and 17.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,692 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 32.0 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.17 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.9 MB in the beginning and 26.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,695 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 45.1 MB. Free memory was 24.0 MB in the beginning and 22.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,697 INFO L168 Benchmark]: RCFGBuilder took 406.24 ms. Allocated memory is still 45.1 MB. Free memory was 22.3 MB in the beginning and 22.9 MB in the end (delta: -658.3 kB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,702 INFO L168 Benchmark]: BuchiAutomizer took 2938.63 ms. Allocated memory was 45.1 MB in the beginning and 62.4 MB in the end (delta: 17.3 MB). Free memory was 22.9 MB in the beginning and 17.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,702 INFO L168 Benchmark]: Witness Printer took 12.59 ms. Allocated memory is still 62.4 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 2.3 kB). Peak memory consumption was 2.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:42:45,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 32.0 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 628.17 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 20.9 MB in the beginning and 26.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 24.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 45.1 MB. Free memory was 24.0 MB in the beginning and 22.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 406.24 ms. Allocated memory is still 45.1 MB. Free memory was 22.3 MB in the beginning and 22.9 MB in the end (delta: -658.3 kB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 2938.63 ms. Allocated memory was 45.1 MB in the beginning and 62.4 MB in the end (delta: 17.3 MB). Free memory was 22.9 MB in the beginning and 17.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. * Witness Printer took 12.59 ms. Allocated memory is still 62.4 MB. Free memory was 17.7 MB in the beginning and 17.7 MB in the end (delta: 2.3 kB). Peak memory consumption was 2.3 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length2 * sizeof(char))] + -1 * s and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 17 SDslu, 7 SDs, 0 SdLazy, 7 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital188 mio100 ax100 hnf99 lsp96 ukn78 mio100 lsp50 div100 bol100 ite100 ukn100 eq186 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms 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...