./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 20ed64ec 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_1.5.800.v20200727-1323.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 0.2.1-dev-20ed64e [2021-08-27 13:55:43,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:55:43,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:55:43,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:55:43,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:55:43,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:55:43,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:55:43,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:55:43,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:55:43,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:55:43,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:55:43,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:55:43,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:55:43,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:55:43,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:55:43,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:55:43,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:55:43,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:55:43,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:55:43,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:55:43,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:55:43,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:55:43,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:55:43,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:55:43,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:55:43,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:55:43,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:55:43,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:55:43,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:55:43,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:55:43,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:55:43,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:55:43,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:55:43,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:55:43,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:55:43,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:55:43,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:55:43,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:55:43,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:55:43,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:55:43,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:55:43,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:55:43,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:55:43,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:55:43,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:55:43,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:55:43,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:55:43,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:55:43,963 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:55:43,963 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:55:43,963 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:55:43,963 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:55:43,964 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:55:43,964 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:55:43,965 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:55:43,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:55:43,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:55:43,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:55:43,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:55:43,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:55:43,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:55:43,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:55:43,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:55:43,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:55:43,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:55:43,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:55:43,969 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:55:43,969 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3df7720ba3b76dcfdecddff77e2f89a40d99e447 [2021-08-27 13:55:44,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:55:44,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:55:44,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:55:44,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:55:44,345 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:55:44,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-08-27 13:55:44,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c195524/45993aaed7804599aedc22a807be8d84/FLAG40bc1e46a [2021-08-27 13:55:44,804 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:55:44,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-08-27 13:55:44,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c195524/45993aaed7804599aedc22a807be8d84/FLAG40bc1e46a [2021-08-27 13:55:44,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58c195524/45993aaed7804599aedc22a807be8d84 [2021-08-27 13:55:44,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:55:44,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:55:44,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:55:44,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:55:44,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:55:44,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:44,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ca311b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44, skipping insertion in model container [2021-08-27 13:55:44,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:44,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:55:44,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:55:44,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:55:44,957 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:55:44,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:55:44,976 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:55:44,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44 WrapperNode [2021-08-27 13:55:44,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:55:44,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:55:44,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:55:44,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:55:44,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:44,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:55:45,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:55:45,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:55:45,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:55:45,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:55:45,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:55:45,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:55:45,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:55:45,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (1/1) ... [2021-08-27 13:55:45,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:45,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:45,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 13:55:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-08-27 13:55:45,111 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-08-27 13:55:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:55:45,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:55:45,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:55:45,288 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 13:55:45,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:55:45 BoogieIcfgContainer [2021-08-27 13:55:45,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:55:45,291 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:55:45,291 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:55:45,294 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:55:45,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:55:45,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:55:44" (1/3) ... [2021-08-27 13:55:45,295 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@646adc9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:55:45, skipping insertion in model container [2021-08-27 13:55:45,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:55:45,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:55:44" (2/3) ... [2021-08-27 13:55:45,296 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@646adc9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:55:45, skipping insertion in model container [2021-08-27 13:55:45,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:55:45,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:55:45" (3/3) ... [2021-08-27 13:55:45,298 INFO L389 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2021-08-27 13:55:45,344 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:55:45,344 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:55:45,344 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:55:45,345 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:55:45,345 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:55:45,345 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:55:45,345 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:55:45,345 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:55:45,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 13:55:45,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:45,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:55:45,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:55:45,388 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 13:55:45,388 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:55:45,389 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:55:45,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 13:55:45,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:45,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:55:45,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:55:45,407 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 13:55:45,407 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:55:45,413 INFO L791 eck$LassoCheckResult]: Stem: 4#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; 12#L26true assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 15#L28true call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 8#multENTRYtrue [2021-08-27 13:55:45,413 INFO L793 eck$LassoCheckResult]: Loop: 8#multENTRYtrue ~n := #in~n;~m := #in~m; 5#L13true assume ~m < 0; 17#L14true call #t~ret0 := mult(~n, -~m);< 8#multENTRYtrue [2021-08-27 13:55:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:45,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2021-08-27 13:55:45,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:45,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99977109] [2021-08-27 13:55:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:45,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash 29915, now seen corresponding path program 1 times [2021-08-27 13:55:45,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:45,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629993059] [2021-08-27 13:55:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:45,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,549 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,563 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:45,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1527789780, now seen corresponding path program 1 times [2021-08-27 13:55:45,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:45,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109627988] [2021-08-27 13:55:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:45,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,584 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:45,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:45,848 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:45,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:45,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:45,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:45,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:55:45,849 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:45,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:45,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:45,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-08-27 13:55:45,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:45,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:45,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:45,970 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:45,974 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:55:45,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:45,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 13:55:46,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,031 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 13:55:46,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,104 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,104 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 13:55:46,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,161 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,161 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 13:55:46,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,205 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,205 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-08-27 13:55:46,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 13:55:46,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 13:55:46,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,267 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:46,267 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:46,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 13:55:46,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:46,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-08-27 13:55:46,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,313 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 13:55:46,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:55:46,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:46,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:55:46,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,352 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:46,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:46,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:46,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:46,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:55:46,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:46,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:46,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-08-27 13:55:46,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:46,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:46,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:46,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:46,429 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:55:46,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 13:55:46,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,473 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,490 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 13:55:46,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,502 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,524 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 13:55:46,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 13:55:46,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,566 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,591 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 13:55:46,599 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,620 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 13:55:46,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 13:55:46,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,670 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 13:55:46,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:46,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:46,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:46,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:46,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:46,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:46,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:46,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:46,695 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:55:46,699 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:55:46,699 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:55:46,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:46,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:46,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:46,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 13:55:46,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:55:46,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:55:46,713 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:55:46,714 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2021-08-27 13:55:46,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,740 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:55:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:46,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:46,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:55:46,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:46,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 13:55:46,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:55:46,903 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 [2021-08-27 13:55:46,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:46,998 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 59 transitions. Complement of second has 12 states. [2021-08-27 13:55:46,999 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 [2021-08-27 13:55:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-08-27 13:55:47,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 13:55:47,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:47,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 13:55:47,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:47,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-27 13:55:47,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:47,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-08-27 13:55:47,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:47,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 24 transitions. [2021-08-27 13:55:47,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-27 13:55:47,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-08-27 13:55:47,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2021-08-27 13:55:47,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:55:47,022 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-08-27 13:55:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2021-08-27 13:55:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2021-08-27 13:55:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-08-27 13:55:47,042 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-08-27 13:55:47,042 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-08-27 13:55:47,042 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 13:55:47,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-08-27 13:55:47,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:47,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:55:47,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:55:47,044 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 13:55:47,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 13:55:47,044 INFO L791 eck$LassoCheckResult]: Stem: 119#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; 120#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 126#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 122#L28 call main_#t~ret4 := mult(main_~m~0, main_~n~0);< 127#multENTRY ~n := #in~n;~m := #in~m; 121#L13 assume !(~m < 0); 123#L16 [2021-08-27 13:55:47,044 INFO L793 eck$LassoCheckResult]: Loop: 123#L16 assume !(0 == ~m); 129#L19 call #t~ret1 := mult(~n, ~m - 1);< 131#multENTRY ~n := #in~n;~m := #in~m; 132#L13 assume !(~m < 0); 123#L16 [2021-08-27 13:55:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:47,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1336189782, now seen corresponding path program 1 times [2021-08-27 13:55:47,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:47,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026734606] [2021-08-27 13:55:47,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:47,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1253150, now seen corresponding path program 1 times [2021-08-27 13:55:47,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:47,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854727182] [2021-08-27 13:55:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:47,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,063 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,066 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash -614723597, now seen corresponding path program 1 times [2021-08-27 13:55:47,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:47,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003525719] [2021-08-27 13:55:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:47,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,073 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:47,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:47,191 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:47,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:47,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:47,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:47,191 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:55:47,191 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:47,191 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:47,191 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-08-27 13:55:47,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:47,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:47,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:47,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:47,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:47,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:47,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:47,263 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:47,263 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:55:47,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,265 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 13:55:47,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:47,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:47,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:47,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:47,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:47,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,315 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 13:55:47,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:47,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:47,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:47,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:47,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-27 13:55:47,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,356 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 13:55:47,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:47,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:47,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:47,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:47,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:47,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,389 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 13:55:47,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:47,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:47,419 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 13:55:47,419 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=-8, mult_#in~n=-8} Honda state: {mult_~n=-8, mult_#in~n=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 13:55:47,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:47,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,435 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 13:55:47,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:47,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:47,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-08-27 13:55:47,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:47,464 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:47,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 13:55:47,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:55:47,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:52,150 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:55:52,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-08-27 13:55:52,154 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:52,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:52,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:52,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:52,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:55:52,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:52,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:52,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-08-27 13:55:52,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:52,154 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:52,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,212 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:52,213 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:55:52,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:52,218 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:52,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 13:55:52,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:52,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:52,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:52,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:52,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:52,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:52,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:52,229 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:52,244 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:55:52,258 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:55:52,258 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:55:52,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:52,261 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:52,269 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:55:52,269 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:55:52,269 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:55:52,269 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-08-27 13:55:52,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 13:55:52,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:52,292 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:55:52,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:52,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 13:55:52,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:52,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 13:55:52,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:55:52,412 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 [2021-08-27 13:55:52,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:52,469 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 13 states. [2021-08-27 13:55:52,470 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 [2021-08-27 13:55:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-08-27 13:55:52,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-27 13:55:52,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:52,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2021-08-27 13:55:52,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:52,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 6 letters. Loop has 8 letters. [2021-08-27 13:55:52,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:52,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2021-08-27 13:55:52,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:52,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2021-08-27 13:55:52,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-08-27 13:55:52,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-27 13:55:52,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2021-08-27 13:55:52,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:55:52,473 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-08-27 13:55:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2021-08-27 13:55:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-08-27 13:55:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-08-27 13:55:52,476 INFO L704 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-08-27 13:55:52,476 INFO L587 BuchiCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-08-27 13:55:52,476 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 13:55:52,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 27 transitions. [2021-08-27 13:55:52,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:52,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:55:52,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:55:52,477 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 13:55:52,477 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 13:55:52,477 INFO L791 eck$LassoCheckResult]: Stem: 222#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; 223#L26 assume !!(-65535 <= main_~m~0 && main_~m~0 <= 65535); 230#L27 assume !!(-65535 <= main_~n~0 && main_~n~0 <= 65535); 231#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); 239#L16 assume !(0 == ~m); 225#L19 call #t~ret1 := mult(~n, ~m - 1);< 242#multENTRY ~n := #in~n;~m := #in~m; 224#L13 assume ~m < 0; 226#L14 [2021-08-27 13:55:52,477 INFO L793 eck$LassoCheckResult]: Loop: 226#L14 call #t~ret0 := mult(~n, -~m);< 232#multENTRY ~n := #in~n;~m := #in~m; 234#L13 assume ~m < 0; 226#L14 [2021-08-27 13:55:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash -614723600, now seen corresponding path program 1 times [2021-08-27 13:55:52,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:52,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506300728] [2021-08-27 13:55:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:52,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:52,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:55:52,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 13:55:52,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506300728] [2021-08-27 13:55:52,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506300728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 13:55:52,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 13:55:52,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 13:55:52,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929097395] [2021-08-27 13:55:52,542 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 13:55:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash 59585, now seen corresponding path program 2 times [2021-08-27 13:55:52,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:55:52,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801574893] [2021-08-27 13:55:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:55:52,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:55:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:52,555 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:55:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:55:52,566 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:55:52,650 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:52,650 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:52,650 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:52,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:52,650 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:55:52,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:52,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:52,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-08-27 13:55:52,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:52,651 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:52,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:52,729 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:52,729 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:55:52,729 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:52,730 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:52,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 13:55:52,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:55:52,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:52,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:52,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:52,785 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:52,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 13:55:52,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:55:52,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:55:53,808 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:55:53,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:53,812 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:55:53,813 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:55:53,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:55:53,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:55:53,813 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:55:53,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:53,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:55:53,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:55:53,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-08-27 13:55:53,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:55:53,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:55:53,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:53,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:53,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:53,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:53,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:55:53,893 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:55:53,894 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:55:53,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:53,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:53,894 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:53,902 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 13:55:53,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:55:53,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:55:53,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:55:53,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:55:53,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:55:53,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:55:53,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:55:53,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 13:55:53,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:55:53,939 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 13:55:53,939 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 13:55:53,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:55:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:55:53,940 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:55:53,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 13:55:53,943 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:55:53,943 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:55:53,944 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:55:53,944 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-08-27 13:55:53,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:53,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:55:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:55:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:54,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 13:55:54,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:55:54,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 13:55:54,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:55:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:55:54,097 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 [2021-08-27 13:55:54,097 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8 Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:54,162 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 27 transitions. cyclomatic complexity: 8. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 51 states and 61 transitions. Complement of second has 9 states. [2021-08-27 13:55:54,163 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 [2021-08-27 13:55:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-08-27 13:55:54,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 13:55:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:54,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 3 letters. [2021-08-27 13:55:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:54,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-27 13:55:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:55:54,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2021-08-27 13:55:54,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 13:55:54,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 44 states and 54 transitions. [2021-08-27 13:55:54,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-08-27 13:55:54,173 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-08-27 13:55:54,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2021-08-27 13:55:54,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 13:55:54,173 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-08-27 13:55:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2021-08-27 13:55:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-08-27 13:55:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 10 states have call successors, (13), 10 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-08-27 13:55:54,176 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-08-27 13:55:54,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 13:55:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 13:55:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 13:55:54,180 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:55:54,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 13:55:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 13:55:54,220 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-08-27 13:55:54,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 13:55:54,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 35 transitions. [2021-08-27 13:55:54,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:55:54,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2021-08-27 13:55:54,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:55:54,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:55:54,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:55:54,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:55:54,223 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:55:54,223 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:55:54,223 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:55:54,223 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 13:55:54,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 13:55:54,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:55:54,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 13:55:54,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:55:54 BoogieIcfgContainer [2021-08-27 13:55:54,228 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:55:54,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:55:54,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:55:54,228 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:55:54,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:55:45" (3/4) ... [2021-08-27 13:55:54,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 13:55:54,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:55:54,232 INFO L168 Benchmark]: Toolchain (without parser) took 9401.69 ms. Allocated memory was 56.6 MB in the beginning and 90.2 MB in the end (delta: 33.6 MB). Free memory was 36.0 MB in the beginning and 62.8 MB in the end (delta: -26.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:55:54,233 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:55:54,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 27.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:55:54,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.55 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 25.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:55:54,240 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 56.6 MB. Free memory was 25.9 MB in the beginning and 41.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:55:54,240 INFO L168 Benchmark]: RCFGBuilder took 245.36 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 31.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:55:54,241 INFO L168 Benchmark]: BuchiAutomizer took 8936.72 ms. Allocated memory was 56.6 MB in the beginning and 90.2 MB in the end (delta: 33.6 MB). Free memory was 30.8 MB in the beginning and 63.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:55:54,242 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 90.2 MB. Free memory is still 62.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:55:54,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 146.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 27.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.55 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 25.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 56.6 MB. Free memory was 25.9 MB in the beginning and 41.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 245.36 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 31.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8936.72 ms. Allocated memory was 56.6 MB in the beginning and 90.2 MB in the end (delta: 33.6 MB). Free memory was 30.8 MB in the beginning and 63.6 MB in the end (delta: -32.8 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.87 ms. Allocated memory is still 90.2 MB. Free memory is still 62.8 MB. There was no memory consumed. Max. memory is 16.1 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 8.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 8.0s. 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 14.3ms 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, 47 SDslu, 19 SDs, 0 SdLazy, 73 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.9ms 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: 42ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 6.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 13:55:54,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...