./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 79c8f3e75568b724086e7997d923ad8ab07e6657 .................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:42:49,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:42:49,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:42:49,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:42:49,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:42:49,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:42:49,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:42:49,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:42:49,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:42:49,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:42:49,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:42:49,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:42:49,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:42:49,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:42:49,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:42:49,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:42:49,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:42:49,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:42:49,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:42:49,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:42:49,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:42:49,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:42:49,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:42:49,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:42:49,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:42:49,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:42:49,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:42:49,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:42:49,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:42:49,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:42:49,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:42:49,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:42:49,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:42:49,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:42:49,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:42:49,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:42:49,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:42:49,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:42:49,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:42:49,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:42:49,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:42:49,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:42:49,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:42:49,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:42:49,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:42:49,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:42:49,832 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:42:49,832 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:42:49,832 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:42:49,832 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:42:49,833 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:42:49,833 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:42:49,833 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:42:49,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:42:49,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:42:49,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:42:49,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:42:49,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:42:49,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:42:49,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:42:49,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:42:49,835 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:42:49,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:42:49,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:42:49,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:42:49,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:42:49,837 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:42:49,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:42:49,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:42:49,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:42:49,838 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:42:49,839 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:42:49,839 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 -> 79c8f3e75568b724086e7997d923ad8ab07e6657 [2020-10-20 06:42:50,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:42:50,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:42:50,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:42:50,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:42:50,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:42:50,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i [2020-10-20 06:42:50,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177171898/4692096a2b8c4323b660b482d6bd124c/FLAG70ddcf3d6 [2020-10-20 06:42:50,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:42:50,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrcat_reverse_alloca.i [2020-10-20 06:42:50,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177171898/4692096a2b8c4323b660b482d6bd124c/FLAG70ddcf3d6 [2020-10-20 06:42:51,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177171898/4692096a2b8c4323b660b482d6bd124c [2020-10-20 06:42:51,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:42:51,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:42:51,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:42:51,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:42:51,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:42:51,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113d5c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51, skipping insertion in model container [2020-10-20 06:42:51,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:42:51,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:42:51,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:42:51,532 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:42:51,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:42:51,653 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:42:51,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51 WrapperNode [2020-10-20 06:42:51,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:42:51,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:42:51,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:42:51,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:42:51,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:42:51,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:42:51,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:42:51,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:42:51,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (1/1) ... [2020-10-20 06:42:51,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:42:51,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:42:51,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:42:51,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:42:51,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (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 06:42:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:42:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:42:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:42:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:42:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:42:51,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:42:52,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:42:52,141 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 06:42:52,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:52 BoogieIcfgContainer [2020-10-20 06:42:52,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:42:52,144 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:42:52,144 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:42:52,149 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:42:52,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:52,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:42:51" (1/3) ... [2020-10-20 06:42:52,151 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2efa8acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:42:52, skipping insertion in model container [2020-10-20 06:42:52,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:52,152 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:42:51" (2/3) ... [2020-10-20 06:42:52,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2efa8acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:42:52, skipping insertion in model container [2020-10-20 06:42:52,152 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:42:52,152 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:52" (3/3) ... [2020-10-20 06:42:52,155 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrcat_reverse_alloca.i [2020-10-20 06:42:52,205 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:42:52,205 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:42:52,205 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:42:52,205 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:42:52,206 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:42:52,208 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:42:52,208 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:42:52,208 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:42:52,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 06:42:52,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 06:42:52,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:42:52,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:42:52,252 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:42:52,252 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:42:52,253 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:42:52,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-20 06:42:52,254 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 06:42:52,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:42:52,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:42:52,255 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:42:52,255 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:42:52,263 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#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); 10#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(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - main_~length3~0), 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 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 06:42:52,263 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 !!(0 != 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, cstrcat_#t~post206.offset - 1;havoc cstrcat_#t~post206.base, cstrcat_#t~post206.offset; 7#L367-3true [2020-10-20 06:42:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-10-20 06:42:52,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:52,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466816350] [2020-10-20 06:42:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,505 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2020-10-20 06:42:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:52,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594846737] [2020-10-20 06:42:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:52,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:52,523 INFO L82 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2020-10-20 06:42:52,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:42:52,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260032631] [2020-10-20 06:42:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:42:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:42:52,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:42:52,625 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:42:53,140 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 99 [2020-10-20 06:42:53,320 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-20 06:42:53,337 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:42:53,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:42:53,341 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:42:53,341 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:42:53,341 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:42:53,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:53,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:42:53,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:42:53,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrcat_reverse_alloca.i_Iteration1_Lasso [2020-10-20 06:42:53,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:42:53,343 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:42:53,384 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 06:42:53,698 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-20 06:42:53,755 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 06:42:53,759 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 06:42:53,762 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 06:42:53,765 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 06:42:53,768 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 06:42:53,772 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 06:42:53,775 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 06:42:53,778 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 06:42:53,781 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 06:42:53,783 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 06:42:53,786 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 06:42:53,789 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 06:42:53,792 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 06:42:53,795 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 06:42:53,798 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 06:42:53,801 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 06:42:53,803 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 06:42:53,806 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 06:42:54,252 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:42:54,257 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 06:42:54,276 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 06:42:54,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:54,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:54,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:42:54,341 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 06:42:54,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:54,347 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:54,352 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 06:42:54,404 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 06:42:54,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:54,417 INFO L402 nArgumentSynthesizer]: A total of 2 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 06:42:54,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:42:54,461 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 06:42:54,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,467 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:54,467 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:54,471 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 06:42:54,506 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 06:42:54,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,518 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:54,518 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:42:54,531 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) [2020-10-20 06:42:54,576 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 06:42:54,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:42:54,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:42:54,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:42:54,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:42:54,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:42:54,591 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 [2020-10-20 06:42:54,618 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:42:54,659 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-10-20 06:42:54,659 INFO L444 ModelExtractionUtils]: 39 out of 49 variables were initially zero. Simplification set additionally 7 variables to zero. 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 06:42:54,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:42:54,695 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:42:54,696 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:42:54,696 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 + 2*ULTIMATE.start_cstrcat_~s~0.offset Supporting invariants [] [2020-10-20 06:42:54,866 INFO L297 tatePredicateManager]: 6 out of 7 supporting invariants were superfluous and have been removed [2020-10-20 06:42:54,876 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 06:42:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:42:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:42:54,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:42:54,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:42:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:42:55,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:42:55,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:42:55,039 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 06:42:55,059 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 06:42:55,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-10-20 06:42:55,147 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 06:42:55,147 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 06:42:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:42:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2020-10-20 06:42:55,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:42:55,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:55,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:42:55,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:55,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:42:55,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:42:55,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2020-10-20 06:42:55,160 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:42:55,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-10-20 06:42:55,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:42:55,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:42:55,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:42:55,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:42:55,165 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:55,165 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:55,165 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:42:55,165 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:42:55,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:42:55,166 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:42:55,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:42:55,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:42:55 BoogieIcfgContainer [2020-10-20 06:42:55,173 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:42:55,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:42:55,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:42:55,173 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:42:55,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:42:52" (3/4) ... [2020-10-20 06:42:55,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:42:55,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:42:55,180 INFO L168 Benchmark]: Toolchain (without parser) took 4148.29 ms. Allocated memory was 36.2 MB in the beginning and 66.6 MB in the end (delta: 30.4 MB). Free memory was 8.7 MB in the beginning and 30.9 MB in the end (delta: -22.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,181 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 36.2 MB. Free memory is still 15.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:42:55,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.67 ms. Allocated memory was 36.2 MB in the beginning and 47.2 MB in the end (delta: 11.0 MB). Free memory was 7.8 MB in the beginning and 27.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 47.2 MB. Free memory was 27.0 MB in the beginning and 25.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,184 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 47.2 MB. Free memory was 25.0 MB in the beginning and 23.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,185 INFO L168 Benchmark]: RCFGBuilder took 407.75 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 23.5 MB in the beginning and 24.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,186 INFO L168 Benchmark]: BuchiAutomizer took 3028.44 ms. Allocated memory was 47.7 MB in the beginning and 66.6 MB in the end (delta: 18.9 MB). Free memory was 24.2 MB in the beginning and 31.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,187 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 66.6 MB. Free memory was 31.6 MB in the beginning and 30.9 MB in the end (delta: 714.1 kB). Peak memory consumption was 714.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:42:55,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 36.2 MB. Free memory is still 15.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 612.67 ms. Allocated memory was 36.2 MB in the beginning and 47.2 MB in the end (delta: 11.0 MB). Free memory was 7.8 MB in the beginning and 27.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 47.2 MB. Free memory was 27.0 MB in the beginning and 25.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 47.2 MB. Free memory was 25.0 MB in the beginning and 23.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 407.75 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 23.5 MB in the beginning and 24.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3028.44 ms. Allocated memory was 47.7 MB in the beginning and 66.6 MB in the end (delta: 18.9 MB). Free memory was 24.2 MB in the beginning and 31.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Witness Printer took 5.19 ms. Allocated memory is still 66.6 MB. Free memory was 31.6 MB in the beginning and 30.9 MB in the end (delta: 714.1 kB). Peak memory consumption was 714.1 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))] + 2 * s and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. 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, 15 SDslu, 7 SDs, 0 SdLazy, 8 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital205 mio100 ax100 hnf99 lsp97 ukn74 mio100 lsp54 div100 bol100 ite100 ukn100 eq187 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms 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...