./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/c.02.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 c3e40038ef85c6e1a2de0a898912241a10300c47 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:36:39,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:36:39,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:36:39,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:36:39,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:36:39,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:36:39,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:36:39,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:36:39,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:36:39,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:36:39,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:36:39,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:36:39,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:36:39,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:36:39,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:36:39,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:36:39,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:36:39,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:36:39,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:36:39,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:36:39,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:36:39,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:36:39,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:36:39,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:36:39,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:36:39,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:36:39,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:36:39,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:36:39,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:36:39,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:36:39,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:36:39,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:36:39,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:36:39,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:36:39,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:36:39,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:36:39,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:36:39,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:36:39,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:36:39,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:36:39,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:36:39,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:36:39,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:36:39,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:36:39,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:36:39,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:36:39,787 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:36:39,787 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:36:39,787 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:36:39,787 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:36:39,788 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:36:39,788 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:36:39,789 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:36:39,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:36:39,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:36:39,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:36:39,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:36:39,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:36:39,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:36:39,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:36:39,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:36:39,791 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:36:39,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:36:39,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:36:39,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:36:39,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:36:39,792 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:36:39,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:36:39,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:36:39,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:36:39,793 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:36:39,794 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:36:39,794 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3e40038ef85c6e1a2de0a898912241a10300c47 [2020-10-20 06:36:40,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:36:40,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:36:40,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:36:40,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:36:40,066 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:36:40,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.02.c [2020-10-20 06:36:40,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f44fe785/d5f35394bfb0410083794b2aa25fa495/FLAG2717084a2 [2020-10-20 06:36:40,623 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:36:40,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.02.c [2020-10-20 06:36:40,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f44fe785/d5f35394bfb0410083794b2aa25fa495/FLAG2717084a2 [2020-10-20 06:36:41,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f44fe785/d5f35394bfb0410083794b2aa25fa495 [2020-10-20 06:36:41,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:36:41,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:36:41,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:41,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:36:41,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:36:41,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74734a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41, skipping insertion in model container [2020-10-20 06:36:41,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:36:41,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:36:41,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:41,305 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:36:41,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:36:41,340 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:36:41,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41 WrapperNode [2020-10-20 06:36:41,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:36:41,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:41,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:36:41,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:36:41,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:36:41,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:36:41,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:36:41,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:36:41,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... [2020-10-20 06:36:41,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:36:41,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:36:41,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:36:41,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:36:41,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:36:41,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:36:41,603 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:36:41,603 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:36:41,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:41 BoogieIcfgContainer [2020-10-20 06:36:41,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:36:41,606 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:36:41,606 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:36:41,610 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:36:41,611 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:41,611 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:36:41" (1/3) ... [2020-10-20 06:36:41,613 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@351cc79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:41, skipping insertion in model container [2020-10-20 06:36:41,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:41,613 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:36:41" (2/3) ... [2020-10-20 06:36:41,614 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@351cc79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:36:41, skipping insertion in model container [2020-10-20 06:36:41,614 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:36:41,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:41" (3/3) ... [2020-10-20 06:36:41,616 INFO L373 chiAutomizerObserver]: Analyzing ICFG c.02.c [2020-10-20 06:36:41,682 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:36:41,683 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:36:41,683 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:36:41,683 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:36:41,683 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:36:41,684 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:36:41,684 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:36:41,684 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:36:41,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:36:41,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:41,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:41,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:41,749 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:41,749 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:41,749 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:36:41,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:36:41,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:36:41,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:41,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:41,753 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:36:41,754 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:36:41,765 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L10-2true [2020-10-20 06:36:41,766 INFO L796 eck$LassoCheckResult]: Loop: 9#L10-2true assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 5#L13-2true assume !(main_~x~0 > main_~y~0); 3#L13-3true main_~x~0 := main_~x~0 - 2; 9#L10-2true [2020-10-20 06:36:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:36:41,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:41,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74454795] [2020-10-20 06:36:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-10-20 06:36:41,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:41,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676140519] [2020-10-20 06:36:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,943 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-10-20 06:36:41,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:41,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130673599] [2020-10-20 06:36:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:41,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:41,964 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:42,099 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:42,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:42,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:42,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:42,101 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:42,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:42,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:42,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2020-10-20 06:36:42,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:42,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:42,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,242 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:42,243 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:42,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:42,271 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:42,271 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) [2020-10-20 06:36:42,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:42,336 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 [2020-10-20 06:36:42,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:42,345 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) [2020-10-20 06:36:42,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:42,395 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) [2020-10-20 06:36:42,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:42,448 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,583 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:42,585 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:42,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:42,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:42,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:42,585 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:42,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:42,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:42,586 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration1_Loop [2020-10-20 06:36:42,586 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:42,586 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:42,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:42,678 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:42,684 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,693 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:42,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:42,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:42,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:42,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:42,702 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:42,702 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:42,709 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) [2020-10-20 06:36:42,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:42,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:42,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:42,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:42,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:42,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:42,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:42,764 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:42,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:42,771 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:42,776 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:42,777 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:42,783 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:42,784 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:42,825 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:42,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:42,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:42,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:42,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:36:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:42,950 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:36:42,951 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-20 06:36:43,016 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-10-20 06:36:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:36:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:36:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-10-20 06:36:43,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-10-20 06:36:43,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:36:43,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-10-20 06:36:43,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-10-20 06:36:43,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:36:43,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-10-20 06:36:43,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:36:43,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:36:43,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-20 06:36:43,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:43,037 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:36:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-20 06:36:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-10-20 06:36:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-10-20 06:36:43,069 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-10-20 06:36:43,070 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-10-20 06:36:43,070 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:36:43,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-10-20 06:36:43,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:36:43,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:43,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:43,072 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:36:43,072 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:36:43,072 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 74#L13-2 [2020-10-20 06:36:43,072 INFO L796 eck$LassoCheckResult]: Loop: 74#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 74#L13-2 [2020-10-20 06:36:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:36:43,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:43,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096469695] [2020-10-20 06:36:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,086 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-10-20 06:36:43,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:43,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681841532] [2020-10-20 06:36:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,096 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-10-20 06:36:43,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:43,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394512838] [2020-10-20 06:36:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,140 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:43,157 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:43,157 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:43,157 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:43,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:43,158 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:43,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:43,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:43,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2020-10-20 06:36:43,158 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:43,159 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:43,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,214 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:43,214 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:43,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:43,230 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:43,235 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:43,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:43,273 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:43,278 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:43,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:43,324 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:43,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:43,539 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:43,541 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:43,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:43,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:43,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:43,542 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:43,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:43,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:43,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration2_Loop [2020-10-20 06:36:43,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:43,543 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:43,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:43,608 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:43,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:43,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:43,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:43,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:43,620 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:43,620 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:43,628 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,659 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:43,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:43,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:43,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:43,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:43,667 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:43,669 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:43,674 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:43,722 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 Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:43,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:43,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:43,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:43,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:43,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:43,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:43,735 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:43,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:36:43,738 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,748 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:43,748 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:43,748 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:43,748 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:36:43,770 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:43,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:43,804 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:43,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:43,805 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 [2020-10-20 06:36:43,805 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-10-20 06:36:43,821 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-10-20 06:36:43,822 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 [2020-10-20 06:36:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:36:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:36:43,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-20 06:36:43,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-20 06:36:43,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 06:36:43,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:43,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-10-20 06:36:43,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:36:43,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-10-20 06:36:43,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-10-20 06:36:43,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-10-20 06:36:43,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-10-20 06:36:43,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:36:43,827 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-20 06:36:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-10-20 06:36:43,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-10-20 06:36:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:36:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-20 06:36:43,829 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:36:43,829 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-20 06:36:43,829 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:36:43,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-20 06:36:43,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:36:43,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:36:43,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:36:43,831 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-20 06:36:43,831 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:36:43,831 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 123#L13-2 assume !(main_~x~0 > main_~y~0); 118#L13-3 main_~x~0 := main_~x~0 - 2; 119#L10-2 assume !!(main_~x~0 >= 0 && main_~x~0 < 2147483647);main_~x~0 := 1 + main_~x~0;main_~y~0 := 1; 122#L13-2 [2020-10-20 06:36:43,831 INFO L796 eck$LassoCheckResult]: Loop: 122#L13-2 assume !!(main_~x~0 > main_~y~0);main_~y~0 := 1 + main_~y~0; 122#L13-2 [2020-10-20 06:36:43,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,832 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-10-20 06:36:43,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:43,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570414253] [2020-10-20 06:36:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:43,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570414253] [2020-10-20 06:36:43,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:36:43,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:36:43,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794379463] [2020-10-20 06:36:43,898 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:36:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-10-20 06:36:43,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:36:43,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68919235] [2020-10-20 06:36:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:36:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:36:43,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:36:43,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:36:43,962 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:43,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:43,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:43,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:43,962 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:36:43,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:43,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:43,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:43,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2020-10-20 06:36:43,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:43,963 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:43,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:43,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:44,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:44,015 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-10-20 06:36:44,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:44,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:36:44,040 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:36:44,040 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:44,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:36:44,091 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:44,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:36:44,145 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 [2020-10-20 06:36:44,380 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:36:44,383 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:36:44,383 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:36:44,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:36:44,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:36:44,383 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:36:44,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:44,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:36:44,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:36:44,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.02.c_Iteration3_Loop [2020-10-20 06:36:44,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:36:44,384 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:36:44,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:44,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:44,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:36:44,429 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:36:44,429 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:44,440 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:44,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:44,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:44,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:44,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:44,445 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:36:44,445 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:36:44,449 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:44,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:36:44,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:36:44,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:36:44,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:36:44,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:36:44,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:36:44,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:36:44,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:36:44,496 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:36:44,513 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:36:44,513 INFO L444 ModelExtractionUtils]: 0 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:36:44,526 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:36:44,526 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:36:44,526 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:36:44,526 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:36:44,557 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:36:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,591 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:44,592 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 [2020-10-20 06:36:44,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-20 06:36:44,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-10-20 06:36:44,606 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 [2020-10-20 06:36:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:36:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:36:44,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 06:36:44,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:44,607 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,632 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:44,633 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 [2020-10-20 06:36:44,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-20 06:36:44,644 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-10-20 06:36:44,644 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 [2020-10-20 06:36:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:36:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-20 06:36:44,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 06:36:44,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:44,645 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:36:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:36:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:36:44,671 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:36:44,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:36:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:36:44,672 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 [2020-10-20 06:36:44,672 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-10-20 06:36:44,689 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2020-10-20 06:36:44,689 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 [2020-10-20 06:36:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:36:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-10-20 06:36:44,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 06:36:44,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:44,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-20 06:36:44,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:44,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 06:36:44,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:36:44,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-10-20 06:36:44,692 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:36:44,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-10-20 06:36:44,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:36:44,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:36:44,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:36:44,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:36:44,693 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:36:44,693 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:36:44,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:36:44,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:36:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:36:44,699 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-10-20 06:36:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:36:44,702 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:36:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:36:44,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:36:44,702 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:36:44,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:36:44,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:36:44,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:36:44,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:36:44,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:36:44,703 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:36:44,703 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:36:44,703 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:36:44,704 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:36:44,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:36:44,704 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:36:44,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:36:44,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:36:44 BoogieIcfgContainer [2020-10-20 06:36:44,712 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:36:44,712 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:36:44,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:36:44,713 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:36:44,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:36:41" (3/4) ... [2020-10-20 06:36:44,717 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:36:44,717 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:36:44,720 INFO L168 Benchmark]: Toolchain (without parser) took 3705.18 ms. Allocated memory was 34.6 MB in the beginning and 52.4 MB in the end (delta: 17.8 MB). Free memory was 6.2 MB in the beginning and 12.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,721 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 34.6 MB. Free memory was 11.6 MB in the beginning and 11.5 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.38 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.8 MB in the beginning and 28.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.76 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,723 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 ms. Allocated memory is still 45.1 MB. Free memory was 27.1 MB in the beginning and 25.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,724 INFO L168 Benchmark]: RCFGBuilder took 211.03 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 17.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,725 INFO L168 Benchmark]: BuchiAutomizer took 3105.67 ms. Allocated memory was 45.1 MB in the beginning and 52.4 MB in the end (delta: 7.3 MB). Free memory was 16.8 MB in the beginning and 12.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,725 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 52.4 MB. Free memory was 12.5 MB in the beginning and 12.0 MB in the end (delta: 446.8 kB). Peak memory consumption was 446.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:36:44,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 34.6 MB. Free memory was 11.6 MB in the beginning and 11.5 MB in the end (delta: 68.4 kB). Peak memory consumption was 68.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 309.38 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 18.8 MB in the beginning and 28.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.76 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 27.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.74 ms. Allocated memory is still 45.1 MB. Free memory was 27.1 MB in the beginning and 25.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 211.03 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 17.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3105.67 ms. Allocated memory was 45.1 MB in the beginning and 52.4 MB in the end (delta: 7.3 MB). Free memory was 16.8 MB in the beginning and 12.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Witness Printer took 4.92 ms. Allocated memory is still 52.4 MB. Free memory was 12.5 MB in the beginning and 12.0 MB in the end (delta: 446.8 kB). Peak memory consumption was 446.8 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax199 hnf96 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp89 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...