./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Log.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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-restricted-15/Log.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 2d80b45a01c32727728c3a89e06c1e9a4dc4868b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:16:28,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:16:28,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:16:28,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:16:28,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:16:28,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:16:28,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:16:28,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:16:28,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:16:28,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:16:28,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:16:28,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:16:28,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:16:28,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:16:28,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:16:28,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:16:28,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:16:28,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:16:28,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:16:28,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:16:28,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:16:28,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:16:28,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:16:28,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:16:28,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:16:28,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:16:28,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:16:28,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:16:28,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:16:28,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:16:28,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:16:28,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:16:28,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:16:28,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:16:28,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:16:28,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:16:28,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:16:28,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:16:28,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:16:28,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:16:28,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:16:28,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:16:28,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:16:28,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:16:28,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:16:28,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:16:28,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:16:28,988 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:16:28,988 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:16:28,989 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:16:28,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:16:28,989 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:16:28,990 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:16:28,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:16:28,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:16:28,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:16:28,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:16:28,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:16:28,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:16:28,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:16:28,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:16:28,993 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:16:28,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:16:28,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:16:28,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:16:28,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:16:28,994 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:16:28,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:16:28,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:16:28,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:16:28,995 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:16:28,996 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:16:28,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d80b45a01c32727728c3a89e06c1e9a4dc4868b [2020-10-26 04:16:29,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:16:29,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:16:29,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:16:29,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:16:29,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:16:29,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Log.c [2020-10-26 04:16:29,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b021c10fa/dd2a9e07ce9743b7a009eaebe7538799/FLAG524902989 [2020-10-26 04:16:30,227 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:16:30,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Log.c [2020-10-26 04:16:30,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b021c10fa/dd2a9e07ce9743b7a009eaebe7538799/FLAG524902989 [2020-10-26 04:16:30,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b021c10fa/dd2a9e07ce9743b7a009eaebe7538799 [2020-10-26 04:16:30,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:16:30,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:16:30,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:30,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:16:30,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:16:30,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e4b723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30, skipping insertion in model container [2020-10-26 04:16:30,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:16:30,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:16:30,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:30,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:16:30,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:30,942 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:16:30,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30 WrapperNode [2020-10-26 04:16:30,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:30,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:30,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:16:30,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:16:30,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:30,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:16:30,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:16:30,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:16:30,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:30,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:31,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:31,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:31,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... [2020-10-26 04:16:31,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:16:31,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:16:31,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:16:31,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:16:31,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:31,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:16:31,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:16:31,300 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:16:31,301 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 04:16:31,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:31 BoogieIcfgContainer [2020-10-26 04:16:31,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:16:31,305 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:16:31,305 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:16:31,309 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:16:31,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:31,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:16:30" (1/3) ... [2020-10-26 04:16:31,312 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23f68b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:31, skipping insertion in model container [2020-10-26 04:16:31,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:31,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:30" (2/3) ... [2020-10-26 04:16:31,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23f68b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:31, skipping insertion in model container [2020-10-26 04:16:31,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:31,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:31" (3/3) ... [2020-10-26 04:16:31,330 INFO L373 chiAutomizerObserver]: Analyzing ICFG Log.c [2020-10-26 04:16:31,402 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:16:31,402 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:16:31,403 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:16:31,403 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:16:31,403 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:16:31,403 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:16:31,404 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:16:31,404 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:16:31,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:16:31,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:16:31,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:31,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:31,454 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:31,455 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:31,455 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:16:31,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:16:31,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:16:31,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:31,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:31,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:31,458 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:31,467 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 6#L13-2true [2020-10-26 04:16:31,468 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 3#L17-2true assume !(main_~xtmp~0 > 1); 10#L17-3true main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 6#L13-2true [2020-10-26 04:16:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:16:31,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:31,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525363104] [2020-10-26 04:16:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,594 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:31,616 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-10-26 04:16:31,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:31,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20218237] [2020-10-26 04:16:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:31,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20218237] [2020-10-26 04:16:31,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:31,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:16:31,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562276563] [2020-10-26 04:16:31,704 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:16:31,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:31,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:16:31,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:16:31,736 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2020-10-26 04:16:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:31,800 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-10-26 04:16:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:16:31,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-10-26 04:16:31,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:16:31,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2020-10-26 04:16:31,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:16:31,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-26 04:16:31,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2020-10-26 04:16:31,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:31,814 INFO L691 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-10-26 04:16:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2020-10-26 04:16:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2020-10-26 04:16:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 04:16:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2020-10-26 04:16:31,899 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-10-26 04:16:31,900 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-10-26 04:16:31,900 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:16:31,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2020-10-26 04:16:31,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:16:31,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:31,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:31,902 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:31,902 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:16:31,902 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 29#L13-2 [2020-10-26 04:16:31,903 INFO L796 eck$LassoCheckResult]: Loop: 29#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 26#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 27#L17-2 assume !(main_~xtmp~0 > 1); 30#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 29#L13-2 [2020-10-26 04:16:31,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:31,904 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-26 04:16:31,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:31,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892870923] [2020-10-26 04:16:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:31,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2020-10-26 04:16:31,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:31,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595732144] [2020-10-26 04:16:31,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,948 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2020-10-26 04:16:31,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:31,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306745421] [2020-10-26 04:16:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:31,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:31,976 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:32,092 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-10-26 04:16:32,172 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:32,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:32,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:32,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:32,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:32,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:32,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:32,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2020-10-26 04:16:32,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:32,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:32,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:32,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:32,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:32,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:32,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:32,452 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:32,453 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:32,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:32,461 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:32,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:32,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:32,536 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:32,542 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:32,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:32,586 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:32,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=1} Honda state: {ULTIMATE.start_main_~restmp~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:32,642 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:32,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:32,696 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:32,696 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=-5}, {ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=0}] Lambdas: [1, 1, 0] Nus: [0, 1] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:32,722 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:32,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:32,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:33,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:33,648 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:33,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:33,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:33,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:33,649 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:33,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:33,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:33,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:33,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2020-10-26 04:16:33,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:33,650 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:33,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:33,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:33,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:33,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:33,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:33,894 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:33,900 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:33,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:33,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:33,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:33,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:33,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:33,931 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:33,931 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:16:33,940 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:33,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:33,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:33,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:33,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:33,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:33,977 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:33,977 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:16:33,989 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:34,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:34,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:34,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:34,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:34,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:34,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:34,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:34,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,062 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:34,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:34,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:34,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:34,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:34,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:34,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:34,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:34,082 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:34,091 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:16:34,092 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:34,099 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:34,099 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:34,100 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-26 04:16:34,125 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:34,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:34,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:34,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:16:34,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:16:34,297 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:16:34,298 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-10-26 04:16:34,476 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 9 states and 12 transitions. Complement of second has 6 states. [2020-10-26 04:16:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:16:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-10-26 04:16:34,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:16:34,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:34,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:16:34,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:34,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2020-10-26 04:16:34,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:34,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2020-10-26 04:16:34,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:34,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2020-10-26 04:16:34,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-26 04:16:34,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-26 04:16:34,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-26 04:16:34,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:34,491 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:16:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-26 04:16:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-26 04:16:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:16:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-26 04:16:34,494 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:16:34,495 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:16:34,495 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:16:34,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-26 04:16:34,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:34,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:34,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:34,497 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:16:34,502 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:34,502 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 85#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 81#L17-2 [2020-10-26 04:16:34,502 INFO L796 eck$LassoCheckResult]: Loop: 81#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 81#L17-2 [2020-10-26 04:16:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-26 04:16:34,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:34,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614171656] [2020-10-26 04:16:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:34,530 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-10-26 04:16:34,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:34,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788946864] [2020-10-26 04:16:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-10-26 04:16:34,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:34,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822766720] [2020-10-26 04:16:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:34,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:34,587 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:34,623 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:34,623 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:34,624 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:34,624 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:34,624 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:34,624 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,624 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:34,624 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:34,624 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2020-10-26 04:16:34,624 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:34,624 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:34,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:34,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:34,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:34,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:34,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:34,781 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:34,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:34,795 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:34,795 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:34,834 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:34,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:34,883 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:34,906 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=-3}, {ULTIMATE.start_main_~restmp~0=-1}, {ULTIMATE.start_main_~restmp~0=5}] Lambdas: [1, 6, 1] Nus: [0, 1] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:34,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:34,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:34,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:34,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:34,989 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:35,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:35,041 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,082 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:35,084 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:35,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:35,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:35,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:35,085 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:35,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:35,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:35,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2020-10-26 04:16:35,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:35,085 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:35,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:35,236 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:35,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:35,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:35,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:35,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:35,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:35,260 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:16:35,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:35,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:35,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:35,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:35,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:35,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:35,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:35,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:35,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:35,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:35,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:35,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:35,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:35,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:35,374 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:35,374 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,386 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:35,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:35,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:35,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:35,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:35,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:35,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:35,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:35,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:35,431 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:16:35,431 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:35,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:35,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:35,436 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:35,436 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,463 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:35,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:35,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:35,512 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:35,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:35,514 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:16:35,514 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-10-26 04:16:35,539 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2020-10-26 04:16:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:16:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-26 04:16:35,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-26 04:16:35,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:35,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-26 04:16:35,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:35,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-26 04:16:35,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:35,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-10-26 04:16:35,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:35,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2020-10-26 04:16:35,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-26 04:16:35,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-26 04:16:35,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2020-10-26 04:16:35,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:35,546 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-10-26 04:16:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2020-10-26 04:16:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2020-10-26 04:16:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:16:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-10-26 04:16:35,548 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-26 04:16:35,548 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-10-26 04:16:35,548 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:16:35,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-10-26 04:16:35,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:35,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:35,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:35,560 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-10-26 04:16:35,560 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:35,577 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 136#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 133#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 134#L17-2 assume !(main_~xtmp~0 > 1); 138#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 137#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 132#L17-2 [2020-10-26 04:16:35,579 INFO L796 eck$LassoCheckResult]: Loop: 132#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 132#L17-2 [2020-10-26 04:16:35,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2020-10-26 04:16:35,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:35,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435017754] [2020-10-26 04:16:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:16:35,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435017754] [2020-10-26 04:16:35,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:35,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:16:35,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656869933] [2020-10-26 04:16:35,636 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:16:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:35,637 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-10-26 04:16:35,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:35,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897717282] [2020-10-26 04:16:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:35,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:35,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:35,646 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:35,671 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:35,672 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:35,672 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:35,672 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:35,672 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:35,672 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:35,673 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:35,673 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2020-10-26 04:16:35,673 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:35,673 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:35,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,836 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:35,836 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:35,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:35,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:35,850 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:35,876 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:35,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:35,949 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:35,951 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:35,951 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:35,951 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:35,951 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:35,951 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:35,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:35,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:35,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:35,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2020-10-26 04:16:35,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:35,952 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:35,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:35,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:36,118 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:36,119 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:36,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:36,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:36,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:36,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:36,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:36,134 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:36,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:36,140 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:36,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:36,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:36,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:36,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:36,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:36,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:36,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:36,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:36,188 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:36,195 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:16:36,195 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:36,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:36,199 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:36,199 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:36,200 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:36,235 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,297 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:36,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:16:36,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-26 04:16:36,332 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-10-26 04:16:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:16:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-26 04:16:36,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-26 04:16:36,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:36,335 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:16:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:36,388 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:16:36,388 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-26 04:16:36,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-10-26 04:16:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:16:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-26 04:16:36,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-26 04:16:36,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:36,421 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:16:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:36,488 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:36,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:36,490 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:16:36,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-26 04:16:36,512 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2020-10-26 04:16:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-26 04:16:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-26 04:16:36,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-26 04:16:36,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:36,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2020-10-26 04:16:36,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:36,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-26 04:16:36,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:36,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-26 04:16:36,517 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:16:36,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-10-26 04:16:36,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:16:36,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:16:36,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:16:36,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:36,519 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:36,519 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:36,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:36,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:16:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:16:36,521 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-10-26 04:16:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:36,521 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-26 04:16:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:16:36,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-26 04:16:36,522 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:16:36,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:16:36,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:16:36,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:16:36,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:16:36,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:36,523 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:36,523 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:36,523 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:36,523 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:16:36,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:16:36,524 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:16:36,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:16:36,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:16:36 BoogieIcfgContainer [2020-10-26 04:16:36,532 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:16:36,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:16:36,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:16:36,533 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:16:36,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:31" (3/4) ... [2020-10-26 04:16:36,538 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:16:36,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:16:36,540 INFO L168 Benchmark]: Toolchain (without parser) took 5926.29 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 27.9 MB in the beginning and 22.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:36,541 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory is still 33.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:36,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.23 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 32.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:36,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.98 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 30.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:36,543 INFO L168 Benchmark]: Boogie Preprocessor took 23.92 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 958.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:36,544 INFO L168 Benchmark]: RCFGBuilder took 293.90 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 21.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:36,545 INFO L168 Benchmark]: BuchiAutomizer took 5227.23 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 23.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:36,546 INFO L168 Benchmark]: Witness Printer took 5.83 ms. Allocated memory is still 65.0 MB. Free memory was 23.2 MB in the beginning and 22.7 MB in the end (delta: 500.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:36,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory is still 33.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.23 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 32.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.98 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 30.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.92 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 29.8 MB in the end (delta: 958.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 293.90 ms. Allocated memory is still 50.3 MB. Free memory was 29.8 MB in the beginning and 21.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5227.23 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 23.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.83 ms. Allocated memory is still 65.0 MB. Free memory was 23.2 MB in the beginning and 22.7 MB in the end (delta: 500.9 kB). 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 35 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax167 hnf97 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...