./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_04.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/NO_04.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 8d3fb7268073fcc251f9902f5b4913f30f169781 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:16:45,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:16:45,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:16:45,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:16:45,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:16:45,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:16:45,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:16:45,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:16:45,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:16:45,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:16:45,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:16:45,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:16:45,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:16:45,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:16:45,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:16:45,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:16:45,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:16:45,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:16:45,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:16:45,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:16:45,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:16:45,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:16:45,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:16:45,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:16:45,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:16:45,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:16:45,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:16:45,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:16:45,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:16:45,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:16:45,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:16:45,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:16:45,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:16:45,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:16:45,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:16:45,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:16:45,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:16:45,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:16:45,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:16:45,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:16:45,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:16:45,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:16:45,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:16:45,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:16:45,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:16:45,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:16:45,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:16:45,791 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:16:45,791 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:16:45,791 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:16:45,792 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:16:45,792 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:16:45,793 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:16:45,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:16:45,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:16:45,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:16:45,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:16:45,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:16:45,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:16:45,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:16:45,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:16:45,796 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:16:45,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:16:45,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:16:45,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:16:45,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:16:45,797 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:16:45,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:16:45,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:16:45,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:16:45,798 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:16:45,800 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:16:45,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3fb7268073fcc251f9902f5b4913f30f169781 [2020-10-26 04:16:46,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:16:46,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:16:46,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:16:46,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:16:46,271 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:16:46,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_04.c [2020-10-26 04:16:46,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc099717/6f9bb57a4fe544efae8279c23d2a3f2c/FLAG0304421f0 [2020-10-26 04:16:46,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:16:46,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_04.c [2020-10-26 04:16:46,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc099717/6f9bb57a4fe544efae8279c23d2a3f2c/FLAG0304421f0 [2020-10-26 04:16:47,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc099717/6f9bb57a4fe544efae8279c23d2a3f2c [2020-10-26 04:16:47,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:16:47,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:16:47,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:47,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:16:47,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:16:47,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6cff3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47, skipping insertion in model container [2020-10-26 04:16:47,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:16:47,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:16:47,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:47,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:16:47,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:47,623 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:16:47,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47 WrapperNode [2020-10-26 04:16:47,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:47,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:47,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:16:47,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:16:47,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:47,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:16:47,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:16:47,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:16:47,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (1/1) ... [2020-10-26 04:16:47,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:16:47,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:16:47,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:16:47,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:16:47,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (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 04:16:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:16:47,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:16:47,974 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:16:47,974 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-26 04:16:47,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:47 BoogieIcfgContainer [2020-10-26 04:16:47,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:16:47,978 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:16:47,978 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:16:47,982 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:16:47,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:47,983 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:16:47" (1/3) ... [2020-10-26 04:16:47,984 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ebe2c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:47, skipping insertion in model container [2020-10-26 04:16:47,984 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:47,984 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:47" (2/3) ... [2020-10-26 04:16:47,985 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ebe2c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:47, skipping insertion in model container [2020-10-26 04:16:47,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:47,985 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:47" (3/3) ... [2020-10-26 04:16:47,987 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2020-10-26 04:16:48,053 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:16:48,054 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:16:48,054 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:16:48,054 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:16:48,054 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:16:48,054 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:16:48,054 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:16:48,054 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:16:48,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-26 04:16:48,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 04:16:48,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:48,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:48,107 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:48,107 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:48,107 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:16:48,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-26 04:16:48,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-26 04:16:48,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:48,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:48,110 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:48,110 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:48,119 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 15#L15-2true [2020-10-26 04:16:48,120 INFO L796 eck$LassoCheckResult]: Loop: 15#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 5#L18-2true assume !(main_~j~0 < main_~a~0); 3#L18-3true main_~i~0 := 1 + main_~i~0; 15#L15-2true [2020-10-26 04:16:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:48,127 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:16:48,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:48,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826194379] [2020-10-26 04:16:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:48,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:48,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:48,260 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:48,262 INFO L82 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2020-10-26 04:16:48,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:48,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389136700] [2020-10-26 04:16:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:48,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:48,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:48,286 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:48,289 INFO L82 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2020-10-26 04:16:48,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:48,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684150660] [2020-10-26 04:16:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:48,384 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 04:16:48,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684150660] [2020-10-26 04:16:48,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:48,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:16:48,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332766476] [2020-10-26 04:16:48,493 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:48,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:48,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:48,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:48,494 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:48,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:48,495 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:48,495 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:48,495 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2020-10-26 04:16:48,495 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:48,495 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:48,523 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 04:16:48,576 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 04:16:48,589 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 04:16:48,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:48,800 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:48,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:48,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:48,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:48,822 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:48,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:48,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:48,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:48,871 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 04:16:48,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:48,896 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 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 04:16:48,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:48,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:49,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:49,291 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:49,291 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:49,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:49,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:49,292 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:49,292 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:49,292 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:49,292 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:49,292 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2020-10-26 04:16:49,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:49,293 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:49,295 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 04:16:49,308 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 04:16:49,312 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 04:16:49,394 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:49,399 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:16:49,413 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 04:16:49,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:49,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:49,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:49,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:49,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:49,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:49,431 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:49,470 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 04:16:49,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:49,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:49,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:49,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:49,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:16:49,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:49,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:49,526 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 04:16:49,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:49,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:49,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:49,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:49,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:49,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:49,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:49,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:49,548 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:16:49,549 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:16:49,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:49,559 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:49,559 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:49,560 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-26 04:16:49,586 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:49,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:49,635 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:16:49,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:49,654 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:16:49,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:49,770 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 04:16:49,789 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 04:16:49,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2020-10-26 04:16:50,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 60 states and 102 transitions. Complement of second has 9 states. [2020-10-26 04:16:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:50,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:16:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-10-26 04:16:50,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-26 04:16:50,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:50,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:16:50,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:50,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-26 04:16:50,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:50,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2020-10-26 04:16:50,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-26 04:16:50,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2020-10-26 04:16:50,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-10-26 04:16:50,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-10-26 04:16:50,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2020-10-26 04:16:50,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:50,096 INFO L691 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2020-10-26 04:16:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2020-10-26 04:16:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2020-10-26 04:16:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-26 04:16:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2020-10-26 04:16:50,137 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-10-26 04:16:50,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:16:50,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:16:50,143 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand 4 states. [2020-10-26 04:16:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:50,194 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2020-10-26 04:16:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:16:50,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2020-10-26 04:16:50,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-10-26 04:16:50,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2020-10-26 04:16:50,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-10-26 04:16:50,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-10-26 04:16:50,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2020-10-26 04:16:50,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:50,201 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-26 04:16:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2020-10-26 04:16:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2020-10-26 04:16:50,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:16:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2020-10-26 04:16:50,203 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-10-26 04:16:50,203 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-10-26 04:16:50,203 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:16:50,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2020-10-26 04:16:50,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-26 04:16:50,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:50,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:50,205 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:50,205 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:16:50,205 INFO L794 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 181#L15-2 [2020-10-26 04:16:50,205 INFO L796 eck$LassoCheckResult]: Loop: 181#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 180#L18-3 main_~i~0 := 1 + main_~i~0; 181#L15-2 [2020-10-26 04:16:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-26 04:16:50,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544001092] [2020-10-26 04:16:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2020-10-26 04:16:50,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116777039] [2020-10-26 04:16:50,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:50,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116777039] [2020-10-26 04:16:50,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:50,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:16:50,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007556520] [2020-10-26 04:16:50,257 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:16:50,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:50,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:16:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:16:50,259 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-26 04:16:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:50,324 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2020-10-26 04:16:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:16:50,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2020-10-26 04:16:50,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-10-26 04:16:50,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2020-10-26 04:16:50,329 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-26 04:16:50,329 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-26 04:16:50,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-10-26 04:16:50,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:50,330 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-10-26 04:16:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-10-26 04:16:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-10-26 04:16:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:16:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-10-26 04:16:50,334 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-10-26 04:16:50,334 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-10-26 04:16:50,334 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:16:50,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-10-26 04:16:50,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-10-26 04:16:50,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:50,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:50,337 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:50,338 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:16:50,338 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 218#L15-2 [2020-10-26 04:16:50,338 INFO L796 eck$LassoCheckResult]: Loop: 218#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 223#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 224#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 219#L23-2 assume !(main_~l~0 < main_~b~0); 220#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 226#L20-3 main_~j~0 := 1 + main_~j~0; 227#L18-2 assume !(main_~j~0 < main_~a~0); 217#L18-3 main_~i~0 := 1 + main_~i~0; 218#L15-2 [2020-10-26 04:16:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2020-10-26 04:16:50,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104095939] [2020-10-26 04:16:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,357 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2020-10-26 04:16:50,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020103762] [2020-10-26 04:16:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:50,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020103762] [2020-10-26 04:16:50,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:50,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:16:50,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130618831] [2020-10-26 04:16:50,420 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:16:50,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:50,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:16:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:16:50,422 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-26 04:16:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:50,475 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-10-26 04:16:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:16:50,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-10-26 04:16:50,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-10-26 04:16:50,477 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2020-10-26 04:16:50,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-26 04:16:50,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-26 04:16:50,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2020-10-26 04:16:50,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:50,478 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-26 04:16:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2020-10-26 04:16:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-26 04:16:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-26 04:16:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-10-26 04:16:50,480 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-26 04:16:50,480 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-26 04:16:50,480 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:16:50,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-10-26 04:16:50,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-10-26 04:16:50,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:50,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:50,482 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:16:50,482 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:16:50,482 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 253#L15-2 [2020-10-26 04:16:50,482 INFO L796 eck$LassoCheckResult]: Loop: 253#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 257#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 258#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 254#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 255#L25-2 assume !(main_~m~0 >= 0); 259#L25-3 main_~l~0 := 1 + main_~l~0; 260#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 261#L20-3 main_~j~0 := 1 + main_~j~0; 262#L18-2 assume !(main_~j~0 < main_~a~0); 252#L18-3 main_~i~0 := 1 + main_~i~0; 253#L15-2 [2020-10-26 04:16:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2020-10-26 04:16:50,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485662487] [2020-10-26 04:16:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,491 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,492 INFO L82 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2020-10-26 04:16:50,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503326545] [2020-10-26 04:16:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:50,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503326545] [2020-10-26 04:16:50,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:50,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 04:16:50,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872377121] [2020-10-26 04:16:50,536 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:16:50,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:50,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:16:50,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:16:50,537 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-10-26 04:16:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:50,573 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2020-10-26 04:16:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:16:50,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2020-10-26 04:16:50,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:50,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2020-10-26 04:16:50,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-26 04:16:50,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-26 04:16:50,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2020-10-26 04:16:50,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:50,575 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-26 04:16:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2020-10-26 04:16:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-10-26 04:16:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:16:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-10-26 04:16:50,577 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-26 04:16:50,577 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-10-26 04:16:50,577 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:16:50,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2020-10-26 04:16:50,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:50,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:50,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:50,578 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 04:16:50,578 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:50,578 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 286#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 287#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 288#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 283#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 284#L25-2 [2020-10-26 04:16:50,579 INFO L796 eck$LassoCheckResult]: Loop: 284#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 284#L25-2 [2020-10-26 04:16:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,579 INFO L82 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2020-10-26 04:16:50,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100320615] [2020-10-26 04:16:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2020-10-26 04:16:50,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118647763] [2020-10-26 04:16:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2020-10-26 04:16:50,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:50,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482041529] [2020-10-26 04:16:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:50,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:50,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:50,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:16:50 BoogieIcfgContainer [2020-10-26 04:16:50,778 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:16:50,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:16:50,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:16:50,779 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:16:50,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:47" (3/4) ... [2020-10-26 04:16:50,783 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-26 04:16:50,833 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:16:50,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:16:50,836 INFO L168 Benchmark]: Toolchain (without parser) took 3520.76 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 17.2 MB in the beginning and 40.9 MB in the end (delta: -23.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,837 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:50,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.87 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.6 MB in the beginning and 25.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.68 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 24.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,839 INFO L168 Benchmark]: Boogie Preprocessor took 21.81 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 23.1 MB in the end (delta: 976.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,840 INFO L168 Benchmark]: RCFGBuilder took 290.85 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 25.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,840 INFO L168 Benchmark]: BuchiAutomizer took 2800.46 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 16.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,841 INFO L168 Benchmark]: Witness Printer took 54.93 ms. Allocated memory is still 58.7 MB. Free memory was 16.1 MB in the beginning and 40.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:50,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 39.8 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.87 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.6 MB in the beginning and 25.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.68 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 24.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.81 ms. Allocated memory is still 48.2 MB. Free memory was 24.1 MB in the beginning and 23.1 MB in the end (delta: 976.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 290.85 ms. Allocated memory is still 48.2 MB. Free memory was 23.1 MB in the beginning and 25.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2800.46 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 16.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Witness Printer took 54.93 ms. Allocated memory is still 58.7 MB. Free memory was 16.1 MB in the beginning and 40.9 MB in the end (delta: -24.8 MB). Peak memory consumption was 2.5 MB. 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 (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 94 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf96 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {a=2, \result=0, b=7, m=1003, l=0, i=0, k=3, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...