./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrncat_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/cstrncat_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 0e48acfd964328d443bb00db1a9e4c58c0207581 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:43:14,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:43:14,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:43:14,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:43:14,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:43:14,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:43:14,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:43:14,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:43:14,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:43:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:43:14,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:43:14,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:43:14,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:43:14,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:43:14,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:43:14,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:43:14,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:43:14,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:43:14,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:43:14,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:43:14,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:43:14,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:43:14,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:43:14,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:43:14,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:43:14,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:43:14,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:43:14,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:43:14,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:43:14,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:43:14,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:43:14,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:43:14,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:43:14,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:43:14,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:43:14,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:43:14,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:43:14,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:43:14,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:43:14,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:43:14,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:43:14,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:43:14,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:43:14,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:43:14,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:43:14,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:43:14,294 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:43:14,294 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:43:14,295 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:43:14,295 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:43:14,295 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:43:14,295 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:43:14,296 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:43:14,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:43:14,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:43:14,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:43:14,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:43:14,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:43:14,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:43:14,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:43:14,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:43:14,300 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:43:14,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:43:14,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:43:14,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:43:14,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:43:14,301 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:43:14,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:43:14,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:43:14,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:43:14,302 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:43:14,303 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:43:14,304 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 -> 0e48acfd964328d443bb00db1a9e4c58c0207581 [2020-10-20 06:43:14,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:43:14,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:43:14,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:43:14,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:43:14,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:43:14,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrncat_diffterm_alloca.i [2020-10-20 06:43:14,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d99168d2/29fb42ca6c5f47f4b84d3989524af008/FLAGdfe4a551b [2020-10-20 06:43:15,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:43:15,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrncat_diffterm_alloca.i [2020-10-20 06:43:15,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d99168d2/29fb42ca6c5f47f4b84d3989524af008/FLAGdfe4a551b [2020-10-20 06:43:15,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d99168d2/29fb42ca6c5f47f4b84d3989524af008 [2020-10-20 06:43:15,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:43:15,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:43:15,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:15,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:43:15,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:43:15,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156aef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:15, skipping insertion in model container [2020-10-20 06:43:15,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:15" (1/1) ... [2020-10-20 06:43:15,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:43:15,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:43:16,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:16,021 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:43:16,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:16,159 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:43:16,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16 WrapperNode [2020-10-20 06:43:16,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:16,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:16,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:43:16,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:43:16,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:16,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:43:16,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:43:16,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:43:16,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (1/1) ... [2020-10-20 06:43:16,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:43:16,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:43:16,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:43:16,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:43:16,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (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 06:43:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:43:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:43:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:43:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:43:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:43:16,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:43:16,676 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:43:16,677 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 06:43:16,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:16 BoogieIcfgContainer [2020-10-20 06:43:16,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:43:16,680 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:43:16,680 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:43:16,683 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:43:16,685 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:16,685 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:43:15" (1/3) ... [2020-10-20 06:43:16,686 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b4c33e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:16, skipping insertion in model container [2020-10-20 06:43:16,686 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:16,687 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:16" (2/3) ... [2020-10-20 06:43:16,687 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b4c33e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:16, skipping insertion in model container [2020-10-20 06:43:16,687 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:16,688 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:16" (3/3) ... [2020-10-20 06:43:16,690 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrncat_diffterm_alloca.i [2020-10-20 06:43:16,734 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:43:16,734 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:43:16,734 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:43:16,735 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:43:16,735 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:43:16,735 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:43:16,735 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:43:16,735 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:43:16,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:43:16,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-10-20 06:43:16,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:16,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:16,783 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:43:16,783 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:43:16,784 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:43:16,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:43:16,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-10-20 06:43:16,786 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:16,786 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:16,786 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:43:16,787 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:43:16,793 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~nondet215, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~malloc217.base, main_#t~malloc217.offset, main_#t~ret218.base, main_#t~ret218.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214;main_~n~0 := main_#t~nondet215;havoc main_#t~nondet215; 15#L381true assume !(main_~length1~0 < 1); 18#L381-2true assume !(main_~length2~0 < 1); 11#L384-1true assume !(main_~n~0 < 1); 5#L387-1true assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call main_#t~malloc217.base, main_#t~malloc217.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc217.base, main_#t~malloc217.offset;call write~int(49, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(49, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset, cstrncat_#t~mem205, cstrncat_#t~post210, cstrncat_#t~post211.base, cstrncat_#t~post211.offset, cstrncat_#t~post207.base, cstrncat_#t~post207.offset, cstrncat_#t~mem208, cstrncat_#t~short209, cstrncat_#t~mem212, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 8#L367-3true [2020-10-20 06:43:16,794 INFO L796 eck$LassoCheckResult]: Loop: 8#L367-3true call cstrncat_#t~mem205 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 3#L367-1true assume !!(49 != cstrncat_#t~mem205);havoc cstrncat_#t~mem205;cstrncat_#t~post206.base, cstrncat_#t~post206.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post206.base, 1 + cstrncat_#t~post206.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset; 8#L367-3true [2020-10-20 06:43:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:16,801 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-10-20 06:43:16,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:16,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456527615] [2020-10-20 06:43:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:16,988 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:16,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2020-10-20 06:43:16,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:16,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921289792] [2020-10-20 06:43:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:16,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:17,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:17,006 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:17,009 INFO L82 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2020-10-20 06:43:17,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:17,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302185809] [2020-10-20 06:43:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:17,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:17,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:17,079 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:17,646 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-10-20 06:43:17,820 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-20 06:43:17,834 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:43:17,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:43:17,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:43:17,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:43:17,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:43:17,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:17,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:43:17,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:43:17,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncat_diffterm_alloca.i_Iteration1_Lasso [2020-10-20 06:43:17,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:43:17,837 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:43:17,863 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 06:43:17,875 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 06:43:17,880 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 06:43:17,884 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 06:43:17,887 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 06:43:17,890 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 06:43:17,893 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 06:43:17,896 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 06:43:17,899 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 06:43:17,904 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 06:43:18,246 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-20 06:43:18,324 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 06:43:18,327 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 06:43:18,330 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 06:43:18,333 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 06:43:18,335 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 06:43:18,339 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 06:43:18,342 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 06:43:18,345 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 06:43:18,347 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 06:43:18,351 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 06:43:18,353 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 06:43:18,356 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 06:43:18,523 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-20 06:43:18,789 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-20 06:43:18,934 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:43:18,939 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) [2020-10-20 06:43:18,945 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 06:43:18,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:18,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:18,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:18,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:18,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:18,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:18,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:18,960 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 06:43:18,990 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 06:43:18,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:18,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:18,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:18,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:18,998 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:18,998 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:19,006 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 06:43:19,044 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 06:43:19,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,047 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,047 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,048 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,048 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 06:43:19,051 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 06:43:19,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:19,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:19,094 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 06:43:19,139 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 06:43:19,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:19,144 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 06:43:19,173 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 06:43:19,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:19,176 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 06:43:19,200 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 06:43:19,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:19,209 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:19,247 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 06:43:19,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:19,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:19,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:19,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:19,277 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 06:43:19,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,282 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:19,282 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:19,288 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:19,323 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 06:43:19,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:19,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:19,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:19,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:19,344 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:19,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:19,364 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:43:19,584 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2020-10-20 06:43:19,585 INFO L444 ModelExtractionUtils]: 16 out of 55 variables were initially zero. Simplification set additionally 34 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:19,600 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:43:19,603 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 06:43:19,603 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:43:19,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_cstrncat_~s~0.offset) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_cstrncat_~s~0.offset Supporting invariants [-1*v_rep(select #length ULTIMATE.start_main_#t~malloc216.base)_1 + 1*ULTIMATE.start_main_~length1~0 >= 0] [2020-10-20 06:43:19,702 INFO L297 tatePredicateManager]: 8 out of 10 supporting invariants were superfluous and have been removed [2020-10-20 06:43:19,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:19,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:43:19,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:19,865 WARN L261 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:43:19,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:19,892 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 06:43:19,911 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 06:43:19,913 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-20 06:43:20,045 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 50 states and 73 transitions. Complement of second has 8 states. [2020-10-20 06:43:20,047 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 06:43:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:43:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2020-10-20 06:43:20,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:43:20,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:20,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:43:20,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:20,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:43:20,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:20,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 73 transitions. [2020-10-20 06:43:20,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:43:20,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 20 states and 27 transitions. [2020-10-20 06:43:20,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:43:20,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:43:20,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2020-10-20 06:43:20,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:43:20,077 INFO L691 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2020-10-20 06:43:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2020-10-20 06:43:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-20 06:43:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:43:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-10-20 06:43:20,113 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-10-20 06:43:20,114 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-10-20 06:43:20,115 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:43:20,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2020-10-20 06:43:20,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:43:20,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:20,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:20,122 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:43:20,122 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:43:20,123 INFO L794 eck$LassoCheckResult]: Stem: 170#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 165#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~nondet215, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~malloc217.base, main_#t~malloc217.offset, main_#t~ret218.base, main_#t~ret218.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214;main_~n~0 := main_#t~nondet215;havoc main_#t~nondet215; 166#L381 assume !(main_~length1~0 < 1); 171#L381-2 assume !(main_~length2~0 < 1); 181#L384-1 assume !(main_~n~0 < 1); 176#L387-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call main_#t~malloc217.base, main_#t~malloc217.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc217.base, main_#t~malloc217.offset;call write~int(49, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(49, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset, cstrncat_#t~mem205, cstrncat_#t~post210, cstrncat_#t~post211.base, cstrncat_#t~post211.offset, cstrncat_#t~post207.base, cstrncat_#t~post207.offset, cstrncat_#t~mem208, cstrncat_#t~short209, cstrncat_#t~mem212, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 177#L367-3 call cstrncat_#t~mem205 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 167#L367-1 assume !(49 != cstrncat_#t~mem205);havoc cstrncat_#t~mem205; 168#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 183#L369 assume !cstrncat_#t~short209; 179#L369-2 assume !!cstrncat_#t~short209;havoc cstrncat_#t~post207.base, cstrncat_#t~post207.offset;havoc cstrncat_#t~mem208;havoc cstrncat_#t~short209;cstrncat_#t~post210 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post210 - 1;havoc cstrncat_#t~post210;cstrncat_#t~post211.base, cstrncat_#t~post211.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post211.base, 1 + cstrncat_#t~post211.offset;havoc cstrncat_#t~post211.base, cstrncat_#t~post211.offset; 182#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 173#L369 [2020-10-20 06:43:20,124 INFO L796 eck$LassoCheckResult]: Loop: 173#L369 assume !cstrncat_#t~short209; 178#L369-2 assume !!cstrncat_#t~short209;havoc cstrncat_#t~post207.base, cstrncat_#t~post207.offset;havoc cstrncat_#t~mem208;havoc cstrncat_#t~short209;cstrncat_#t~post210 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post210 - 1;havoc cstrncat_#t~post210;cstrncat_#t~post211.base, cstrncat_#t~post211.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post211.base, 1 + cstrncat_#t~post211.offset;havoc cstrncat_#t~post211.base, cstrncat_#t~post211.offset; 172#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 173#L369 [2020-10-20 06:43:20,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:20,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1662025132, now seen corresponding path program 1 times [2020-10-20 06:43:20,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:20,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959054444] [2020-10-20 06:43:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:43:20,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959054444] [2020-10-20 06:43:20,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:43:20,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:43:20,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380689845] [2020-10-20 06:43:20,221 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:43:20,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash 76643, now seen corresponding path program 1 times [2020-10-20 06:43:20,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:20,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342292179] [2020-10-20 06:43:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:43:20,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342292179] [2020-10-20 06:43:20,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:43:20,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:43:20,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116258771] [2020-10-20 06:43:20,233 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:43:20,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:43:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:43:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:43:20,238 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 06:43:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:43:20,254 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-10-20 06:43:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:43:20,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2020-10-20 06:43:20,256 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:43:20,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-10-20 06:43:20,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:43:20,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:43:20,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:43:20,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:43:20,264 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:20,264 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:20,265 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:43:20,265 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:43:20,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:43:20,265 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:43:20,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:43:20,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:43:20 BoogieIcfgContainer [2020-10-20 06:43:20,273 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:43:20,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:43:20,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:43:20,274 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:43:20,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:16" (3/4) ... [2020-10-20 06:43:20,278 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:43:20,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:43:20,280 INFO L168 Benchmark]: Toolchain (without parser) took 4788.54 ms. Allocated memory was 35.7 MB in the beginning and 73.4 MB in the end (delta: 37.7 MB). Free memory was 15.1 MB in the beginning and 50.0 MB in the end (delta: -34.8 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,281 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 9.7 MB in the beginning and 9.7 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.86 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 14.3 MB in the beginning and 21.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,284 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 45.1 MB. Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,285 INFO L168 Benchmark]: RCFGBuilder took 438.48 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 17.8 MB in the beginning and 16.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:43:20,286 INFO L168 Benchmark]: BuchiAutomizer took 3593.78 ms. Allocated memory was 45.6 MB in the beginning and 73.4 MB in the end (delta: 27.8 MB). Free memory was 15.8 MB in the beginning and 50.0 MB in the end (delta: -34.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:43:20,286 INFO L168 Benchmark]: Witness Printer took 4.60 ms. Allocated memory is still 73.4 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:43:20,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 9.7 MB in the beginning and 9.7 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 663.86 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 14.3 MB in the beginning and 21.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.10 ms. Allocated memory is still 45.1 MB. Free memory was 21.4 MB in the beginning and 19.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 45.1 MB. Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 438.48 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 17.8 MB in the beginning and 16.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3593.78 ms. Allocated memory was 45.6 MB in the beginning and 73.4 MB in the end (delta: 27.8 MB). Free memory was 15.8 MB in the beginning and 50.0 MB in the end (delta: -34.2 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.60 ms. Allocated memory is still 73.4 MB. Free memory is still 50.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * s and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 3 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 23 SDslu, 20 SDs, 0 SdLazy, 20 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital199 mio100 ax100 hnf98 lsp96 ukn76 mio100 lsp52 div100 bol100 ite100 ukn100 eq192 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms 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...