./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --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-crafted/RecursiveMultiplication-1.c -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 3df7720ba3b76dcfdecddff77e2f89a40d99e447 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:33:26,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:33:26,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:33:26,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:33:26,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:33:26,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:33:26,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:33:26,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:33:26,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:33:26,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:33:26,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:33:26,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:33:26,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:33:26,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:33:26,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:33:26,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:33:26,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:33:26,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:33:26,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:33:26,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:33:26,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:33:26,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:33:26,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:33:26,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:33:26,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:33:26,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:33:26,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:33:26,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:33:26,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:33:26,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:33:26,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:33:26,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:33:26,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:33:26,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:33:26,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:33:26,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:33:26,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:33:26,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:33:26,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:33:26,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:33:26,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:33:26,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:33:27,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:33:27,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:33:27,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:33:27,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:33:27,007 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:33:27,007 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:33:27,007 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:33:27,008 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:33:27,008 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:33:27,008 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:33:27,008 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:33:27,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:33:27,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:33:27,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:33:27,010 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:33:27,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:33:27,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:33:27,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:33:27,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:33:27,011 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:33:27,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:33:27,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:33:27,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:33:27,012 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:33:27,013 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:33:27,013 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 -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2020-10-20 06:33:27,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:33:27,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:33:27,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:33:27,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:33:27,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:33:27,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2020-10-20 06:33:27,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205e5427f/90068f799a344ddc90db8b28ac18ecc2/FLAGe5776e8c8 [2020-10-20 06:33:27,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:33:27,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2020-10-20 06:33:27,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205e5427f/90068f799a344ddc90db8b28ac18ecc2/FLAGe5776e8c8 [2020-10-20 06:33:28,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205e5427f/90068f799a344ddc90db8b28ac18ecc2 [2020-10-20 06:33:28,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:33:28,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:33:28,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:28,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:33:28,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:33:28,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2c1116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28, skipping insertion in model container [2020-10-20 06:33:28,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:33:28,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:33:28,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:28,352 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:33:28,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:28,377 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:33:28,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28 WrapperNode [2020-10-20 06:33:28,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:28,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:28,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:33:28,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:33:28,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:28,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:33:28,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:33:28,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:33:28,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (1/1) ... [2020-10-20 06:33:28,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:33:28,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:33:28,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:33:28,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:33:28,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (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 06:33:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-20 06:33:28,504 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-20 06:33:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:33:28,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:33:28,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:33:28,692 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:33:28,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:28 BoogieIcfgContainer [2020-10-20 06:33:28,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:33:28,695 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:33:28,695 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:33:28,698 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:33:28,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:28,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:33:28" (1/3) ... [2020-10-20 06:33:28,700 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@749b0929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:28, skipping insertion in model container [2020-10-20 06:33:28,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:28,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:28" (2/3) ... [2020-10-20 06:33:28,701 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@749b0929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:28, skipping insertion in model container [2020-10-20 06:33:28,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:28,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:28" (3/3) ... [2020-10-20 06:33:28,703 INFO L373 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2020-10-20 06:33:28,748 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:33:28,748 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:33:28,748 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:33:28,748 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:33:28,748 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:33:28,748 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:33:28,748 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:33:28,749 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:33:28,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 06:33:28,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:28,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:28,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:28,803 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:33:28,803 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:33:28,803 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:33:28,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 06:33:28,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:28,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:28,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:28,806 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:33:28,807 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:33:28,813 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 3#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 8#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 4#multENTRYtrue [2020-10-20 06:33:28,813 INFO L796 eck$LassoCheckResult]: Loop: 4#multENTRYtrue ~n := #in~n;~m := #in~m; 11#L13true assume ~m < 0; 9#L14true call #t~ret0 := mult(~n, -~m);< 4#multENTRYtrue [2020-10-20 06:33:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2020-10-20 06:33:28,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651265371] [2020-10-20 06:33:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,923 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:28,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,925 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2020-10-20 06:33:28,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705130853] [2020-10-20 06:33:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,947 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2020-10-20 06:33:28,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:28,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83234726] [2020-10-20 06:33:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:28,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:28,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:29,146 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,148 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,148 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,148 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:29,149 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,149 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,149 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,149 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2020-10-20 06:33:29,150 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,150 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,177 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 06:33:29,187 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 06:33:29,191 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 06:33:29,196 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 06:33:29,201 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 06:33:29,205 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 06:33:29,212 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 06:33:29,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:29,303 INFO L404 LassoAnalysis]: Checking for nontermination... 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 06:33:29,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,329 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:29,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,369 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:29,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:29,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,465 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:29,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:29,527 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:29,527 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 06:33:29,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:29,554 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:29,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:29,584 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,662 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:29,664 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:29,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:29,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:29,665 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:29,665 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:29,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,665 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:29,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:29,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2020-10-20 06:33:29,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:29,666 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:29,673 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 06:33:29,683 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 06:33:29,690 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 06:33:29,698 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 06:33:29,707 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 06:33:29,712 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 06:33:29,718 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 06:33:29,801 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:29,808 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:29,830 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 06:33:29,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:29,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:29,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:29,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:29,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:29,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:29,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,845 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) [2020-10-20 06:33:29,893 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 06:33:29,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:29,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:29,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:29,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:29,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:29,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:29,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:29,951 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 06:33:29,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:29,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:29,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:29,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:29,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:29,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:29,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:29,961 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,006 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 06:33:30,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:30,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:30,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:30,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:30,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:30,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:30,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:30,014 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,076 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 06:33:30,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:30,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:30,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:30,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:30,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:30,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:30,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,083 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,127 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 06:33:30,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:30,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:30,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:30,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:30,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:30,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:30,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,134 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 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,173 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 06:33:30,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:30,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:30,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:30,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:30,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:30,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:30,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:30,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:30,186 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:33:30,186 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,200 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:30,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:30,200 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:30,201 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:30,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:33:30,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:30,341 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 06:33:30,359 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:33:30,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2020-10-20 06:33:30,500 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 46 states and 59 transitions. Complement of second has 12 states. [2020-10-20 06:33:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:33:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:33:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-20 06:33:30,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:33:30,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:33:30,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:33:30,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:30,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-20 06:33:30,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:30,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2020-10-20 06:33:30,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-20 06:33:30,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-20 06:33:30,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2020-10-20 06:33:30,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:30,525 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-20 06:33:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2020-10-20 06:33:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2020-10-20 06:33:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 06:33:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-10-20 06:33:30,552 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 06:33:30,552 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 06:33:30,552 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:33:30,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2020-10-20 06:33:30,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:30,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:30,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:30,554 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:33:30,554 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:33:30,554 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 125#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 120#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 119#multENTRY ~n := #in~n;~m := #in~m; 122#L13 assume !(~m < 0); 127#L16 [2020-10-20 06:33:30,554 INFO L796 eck$LassoCheckResult]: Loop: 127#L16 assume !(0 == ~m); 128#L19 call #t~ret1 := mult(~n, ~m - 1);< 131#multENTRY ~n := #in~n;~m := #in~m; 132#L13 assume !(~m < 0); 127#L16 [2020-10-20 06:33:30,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2020-10-20 06:33:30,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:30,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369775492] [2020-10-20 06:33:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2020-10-20 06:33:30,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:30,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036924827] [2020-10-20 06:33:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:30,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:30,580 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2020-10-20 06:33:30,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:30,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315695596] [2020-10-20 06:33:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:30,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:30,601 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:30,729 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:30,729 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:30,729 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:30,729 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:30,729 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:30,730 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,730 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:30,730 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:30,730 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2020-10-20 06:33:30,730 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:30,730 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:30,732 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 06:33:30,735 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 06:33:30,738 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 06:33:30,740 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 06:33:30,747 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 06:33:30,815 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:30,815 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:30,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:30,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:30,823 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:30,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:30,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:30,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:30,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:30,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:30,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:30,934 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:30,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:30,994 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:31,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:31,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0, mult_#in~n=0} Honda state: {mult_~n=0, mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:31,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:31,047 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:31,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:31,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:34,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:34,313 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:34,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:34,313 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:34,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:34,314 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:34,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:34,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:34,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:34,314 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2020-10-20 06:33:34,314 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:34,314 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:34,316 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 06:33:34,324 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 06:33:34,326 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 06:33:34,336 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 06:33:34,339 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 06:33:34,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:34,401 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:34,414 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 06:33:34,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:34,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:34,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:34,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:34,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:34,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:34,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:34,426 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:34,432 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:34,432 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:34,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:34,444 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:34,444 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:34,444 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:34,476 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:34,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:34,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:34,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:33:34,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:34,562 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 06:33:34,563 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:33:34,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-10-20 06:33:34,650 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 26 states and 31 transitions. Complement of second has 13 states. [2020-10-20 06:33:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:33:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:33:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-10-20 06:33:34,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:33:34,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:34,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-20 06:33:34,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:34,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2020-10-20 06:33:34,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:34,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2020-10-20 06:33:34,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:34,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2020-10-20 06:33:34,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-10-20 06:33:34,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:33:34,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2020-10-20 06:33:34,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:34,658 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-20 06:33:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2020-10-20 06:33:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-10-20 06:33:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:33:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-10-20 06:33:34,662 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-10-20 06:33:34,662 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-10-20 06:33:34,662 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:33:34,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2020-10-20 06:33:34,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:34,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:34,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:34,664 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:33:34,664 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:33:34,664 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~res~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 228#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 229#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 235#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 236#multENTRY ~n := #in~n;~m := #in~m; 241#L13 assume !(~m < 0); 243#L16 assume !(0 == ~m); 223#L19 call #t~ret1 := mult(~n, ~m - 1);< 222#multENTRY ~n := #in~n;~m := #in~m; 224#L13 assume ~m < 0; 232#L14 [2020-10-20 06:33:34,665 INFO L796 eck$LassoCheckResult]: Loop: 232#L14 call #t~ret0 := mult(~n, -~m);< 237#multENTRY ~n := #in~n;~m := #in~m; 242#L13 assume ~m < 0; 232#L14 [2020-10-20 06:33:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2020-10-20 06:33:34,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:34,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377835815] [2020-10-20 06:33:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:33:34,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377835815] [2020-10-20 06:33:34,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:33:34,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:33:34,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309682146] [2020-10-20 06:33:34,743 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:33:34,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:34,743 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2020-10-20 06:33:34,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:34,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351475543] [2020-10-20 06:33:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:34,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:34,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:34,754 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:34,818 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:34,818 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:34,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:34,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:34,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:34,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:34,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:34,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:34,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2020-10-20 06:33:34,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:34,820 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:34,821 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 06:33:34,830 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 06:33:34,833 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 06:33:34,835 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 06:33:34,841 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 06:33:34,909 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:34,910 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:34,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:34,913 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:34,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:34,957 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:35,978 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:35,980 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:35,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:35,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:35,980 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:35,980 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:35,980 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:35,980 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:35,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:35,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2020-10-20 06:33:35,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:35,981 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:35,982 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 06:33:35,993 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 06:33:35,995 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 06:33:36,001 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 06:33:36,003 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 06:33:36,048 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:36,048 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:36,058 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 06:33:36,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:36,060 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:36,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:36,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:36,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:36,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:36,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:36,067 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:36,071 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:33:36,071 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:36,074 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:36,074 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:36,074 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:36,074 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:36,110 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:36,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:33:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:36,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:33:36,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:36,241 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 06:33:36,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:33:36,242 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-10-20 06:33:36,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 51 states and 61 transitions. Complement of second has 9 states. [2020-10-20 06:33:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:33:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:33:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-10-20 06:33:36,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:33:36,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:36,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 06:33:36,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:36,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-20 06:33:36,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:36,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2020-10-20 06:33:36,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:33:36,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2020-10-20 06:33:36,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-10-20 06:33:36,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-10-20 06:33:36,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-20 06:33:36,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:36,286 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-20 06:33:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-20 06:33:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-20 06:33:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:33:36,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2020-10-20 06:33:36,291 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-20 06:33:36,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:33:36,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:33:36,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:33:36,296 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand 5 states. [2020-10-20 06:33:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:33:36,340 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-20 06:33:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:33:36,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2020-10-20 06:33:36,342 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:36,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-20 06:33:36,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:33:36,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:33:36,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:33:36,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:33:36,343 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:36,343 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:36,343 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:36,343 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:33:36,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:33:36,343 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:36,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:33:36,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:33:36 BoogieIcfgContainer [2020-10-20 06:33:36,351 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:33:36,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:33:36,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:33:36,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:33:36,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:28" (3/4) ... [2020-10-20 06:33:36,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:33:36,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:33:36,359 INFO L168 Benchmark]: Toolchain (without parser) took 8224.48 ms. Allocated memory was 43.0 MB in the beginning and 53.0 MB in the end (delta: 10.0 MB). Free memory was 24.1 MB in the beginning and 14.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,360 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 32.5 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.26 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 13.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.08 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 13.7 MB in the beginning and 25.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,362 INFO L168 Benchmark]: Boogie Preprocessor took 19.19 ms. Allocated memory is still 43.5 MB. Free memory was 25.3 MB in the beginning and 24.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,363 INFO L168 Benchmark]: RCFGBuilder took 252.76 ms. Allocated memory is still 43.5 MB. Free memory was 24.2 MB in the beginning and 14.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,364 INFO L168 Benchmark]: BuchiAutomizer took 7656.16 ms. Allocated memory was 43.5 MB in the beginning and 53.0 MB in the end (delta: 9.4 MB). Free memory was 13.9 MB in the beginning and 15.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,365 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 53.0 MB. Free memory was 15.0 MB in the beginning and 14.5 MB in the end (delta: 516.9 kB). Peak memory consumption was 516.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:36,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 32.5 MB. Free memory was 10.8 MB in the beginning and 10.8 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 235.26 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 13.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.08 ms. Allocated memory was 43.0 MB in the beginning and 43.5 MB in the end (delta: 524.3 kB). Free memory was 13.7 MB in the beginning and 25.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.19 ms. Allocated memory is still 43.5 MB. Free memory was 25.3 MB in the beginning and 24.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 252.76 ms. Allocated memory is still 43.5 MB. Free memory was 24.2 MB in the beginning and 14.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 7656.16 ms. Allocated memory was 43.5 MB in the beginning and 53.0 MB in the end (delta: 9.4 MB). Free memory was 13.9 MB in the beginning and 15.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.30 ms. Allocated memory is still 53.0 MB. Free memory was 15.0 MB in the beginning and 14.5 MB in the end (delta: 516.9 kB). Peak memory consumption was 516.9 kB. 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 6.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 42 SDtfs, 46 SDslu, 13 SDs, 0 SdLazy, 72 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf92 smp100 dnf100 smp100 tf110 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...