./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.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 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:15:13,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:15:13,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:15:13,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:15:13,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:15:13,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:15:13,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:15:13,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:15:13,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:15:13,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:15:13,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:15:13,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:15:13,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:15:13,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:15:13,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:15:13,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:15:13,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:15:13,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:15:13,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:15:13,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:15:13,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:15:13,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:15:13,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:15:13,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:15:13,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:15:13,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:15:13,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:15:13,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:15:13,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:15:13,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:15:13,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:15:13,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:15:13,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:15:13,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:15:13,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:15:13,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:15:13,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:15:13,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:15:13,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:15:13,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:15:13,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:15:13,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:15:13,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:15:13,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:15:13,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:15:13,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:15:13,729 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:15:13,730 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:15:13,730 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:15:13,730 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:15:13,730 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:15:13,731 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:15:13,731 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:15:13,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:15:13,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:15:13,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:15:13,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:15:13,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:15:13,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:15:13,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:15:13,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:15:13,733 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:15:13,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:15:13,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:15:13,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:15:13,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:15:13,735 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:15:13,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:15:13,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:15:13,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:15:13,736 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:15:13,737 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:15:13,737 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2020-10-26 04:15:14,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:15:14,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:15:14,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:15:14,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:15:14,206 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:15:14,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2020-10-26 04:15:14,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30ecefea/f98254a8655a424f82ccbd882cf0d305/FLAGdcea10b99 [2020-10-26 04:15:14,975 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:15:14,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2020-10-26 04:15:14,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30ecefea/f98254a8655a424f82ccbd882cf0d305/FLAGdcea10b99 [2020-10-26 04:15:15,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b30ecefea/f98254a8655a424f82ccbd882cf0d305 [2020-10-26 04:15:15,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:15:15,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:15:15,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:15,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:15:15,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:15:15,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6b9be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15, skipping insertion in model container [2020-10-26 04:15:15,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:15:15,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:15:15,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:15,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:15:15,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:15,597 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:15:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15 WrapperNode [2020-10-26 04:15:15,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:15,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:15,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:15:15,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:15:15,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:15,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:15:15,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:15:15,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:15:15,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... [2020-10-26 04:15:15,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:15:15,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:15:15,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:15:15,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:15:15,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:15:15,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:15:15,909 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:15:15,909 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:15:15,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:15 BoogieIcfgContainer [2020-10-26 04:15:15,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:15:15,913 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:15:15,913 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:15:15,918 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:15:15,919 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:15,919 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:15:15" (1/3) ... [2020-10-26 04:15:15,921 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6447e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:15, skipping insertion in model container [2020-10-26 04:15:15,921 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:15,921 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:15" (2/3) ... [2020-10-26 04:15:15,922 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6447e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:15, skipping insertion in model container [2020-10-26 04:15:15,922 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:15,922 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:15" (3/3) ... [2020-10-26 04:15:15,924 INFO L373 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2020-10-26 04:15:15,989 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:15:15,989 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:15:15,990 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:15:15,990 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:15:15,990 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:15:15,990 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:15:15,990 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:15:15,990 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:15:16,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-26 04:15:16,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:16,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:16,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:16,040 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:15:16,040 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:16,041 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:15:16,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-26 04:15:16,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:16,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:16,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:16,043 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:15:16,043 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:16,053 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~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; 6#L19-2true [2020-10-26 04:15:16,053 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2020-10-26 04:15:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:16,062 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-26 04:15:16,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:16,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263852753] [2020-10-26 04:15:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,191 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-26 04:15:16,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:16,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985288263] [2020-10-26 04:15:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-26 04:15:16,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:16,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832920132] [2020-10-26 04:15:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:16,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:16,252 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:16,409 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-26 04:15:16,492 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:16,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:16,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:16,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:16,493 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:16,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:16,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:16,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:16,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2020-10-26 04:15:16,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:16,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:16,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,692 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:16,693 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:16,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:16,703 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:16,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:16,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:16,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:16,760 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:16,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:16,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:16,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:16,801 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:16,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:16,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:16,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:16,880 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:16,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:16,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:16,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:16,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:16,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:16,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:16,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:16,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2020-10-26 04:15:16,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:16,882 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:16,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:16,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,197 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:17,203 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:17,210 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:17,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:17,213 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:17,213 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:17,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:17,219 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:17,219 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,226 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:17,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:17,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:17,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:17,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:17,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:17,258 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:17,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:17,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:17,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:17,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:17,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:17,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:17,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:17,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:17,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,312 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:17,321 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:17,321 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:17,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:17,336 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:17,336 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:17,337 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,367 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:17,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:17,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:17,421 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:17,492 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 [2020-10-26 04:15:17,493 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-26 04:15:17,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2020-10-26 04:15:17,559 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 [2020-10-26 04:15:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-10-26 04:15:17,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-26 04:15:17,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:17,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:15:17,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:17,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:15:17,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:17,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-10-26 04:15:17,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:17,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-10-26 04:15:17,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-26 04:15:17,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-26 04:15:17,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-26 04:15:17,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:17,577 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:15:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-26 04:15:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-26 04:15:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:15:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-26 04:15:17,608 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:15:17,608 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-26 04:15:17,608 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:15:17,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-26 04:15:17,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:17,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:17,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:17,610 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:15:17,610 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:17,610 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~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; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2020-10-26 04:15:17,610 INFO L796 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2020-10-26 04:15:17,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:17,611 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-26 04:15:17,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:17,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749078846] [2020-10-26 04:15:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,625 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-10-26 04:15:17,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961589391] [2020-10-26 04:15:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,637 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:17,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-10-26 04:15:17,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:17,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021445561] [2020-10-26 04:15:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:17,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:17,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:17,678 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:17,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:17,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:17,678 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:17,678 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:17,678 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:17,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:17,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2020-10-26 04:15:17,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:17,679 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:17,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,761 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:17,761 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 04:15:17,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:17,766 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 [2020-10-26 04:15:17,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:17,770 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:17,797 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:17,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:17,856 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:17,858 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:17,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:17,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:17,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:17,858 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:17,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:17,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:17,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2020-10-26 04:15:17,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:17,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:17,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:17,970 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:17,970 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) [2020-10-26 04:15:17,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:17,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:17,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:17,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:17,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:17,991 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:17,991 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:17,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,037 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:18,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:18,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:18,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:18,052 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:18,052 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:18,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:18,060 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:18,060 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-26 04:15:18,091 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:18,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:18,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:18,123 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:18,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:18,136 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 [2020-10-26 04:15:18,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:15:18,150 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-10-26 04:15:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-26 04:15:18,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:15:18,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:18,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:18,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:18,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-26 04:15:18,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:18,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-10-26 04:15:18,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:18,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-10-26 04:15:18,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-26 04:15:18,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:15:18,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-10-26 04:15:18,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:18,157 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-26 04:15:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-10-26 04:15:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-26 04:15:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-26 04:15:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-10-26 04:15:18,159 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-26 04:15:18,160 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-26 04:15:18,160 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:15:18,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2020-10-26 04:15:18,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:18,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:18,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:18,162 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2020-10-26 04:15:18,162 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:18,162 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~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; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2020-10-26 04:15:18,162 INFO L796 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2020-10-26 04:15:18,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:18,163 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2020-10-26 04:15:18,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:18,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313859142] [2020-10-26 04:15:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:18,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2020-10-26 04:15:18,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:18,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973189784] [2020-10-26 04:15:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,191 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,192 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2020-10-26 04:15:18,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:18,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545784863] [2020-10-26 04:15:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:18,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:18,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:18,258 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:18,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:18,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:18,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:18,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:18,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:18,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:18,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2020-10-26 04:15:18,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:18,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:18,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,336 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:18,336 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:18,343 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:18,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:18,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:18,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:18,405 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:18,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:18,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:18,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:18,481 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:18,486 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:18,531 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-26 04:15:18,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:18,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:18,601 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:18,605 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:18,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:18,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:18,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:18,606 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:18,606 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,606 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:18,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:18,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2020-10-26 04:15:18,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:18,606 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:18,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:18,687 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:18,687 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:18,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,698 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:15:18,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,699 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 04:15:18,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:18,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,741 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:18,742 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,746 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:18,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:18,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:18,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,786 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:18,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:18,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,831 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:18,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:18,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:18,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:18,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:18,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:18,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:18,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:18,878 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 04:15:18,878 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:18,882 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:18,882 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:18,882 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:18,882 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:18,915 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:18,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:18,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:18,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:18,946 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:18,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:18,958 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 [2020-10-26 04:15:18,959 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-26 04:15:18,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-10-26 04:15:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-26 04:15:18,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:18,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:18,973 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:19,066 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 04:15:19,066 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-26 04:15:19,078 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2020-10-26 04:15:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:19,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-26 04:15:19,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:19,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,079 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,109 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:19,125 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 2 loop predicates [2020-10-26 04:15:19,125 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-26 04:15:19,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2020-10-26 04:15:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-10-26 04:15:19,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:19,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-26 04:15:19,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:15:19,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-10-26 04:15:19,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:19,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2020-10-26 04:15:19,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:15:19,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-26 04:15:19,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-10-26 04:15:19,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:19,146 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-10-26 04:15:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-10-26 04:15:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2020-10-26 04:15:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 04:15:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-10-26 04:15:19,147 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-10-26 04:15:19,148 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-10-26 04:15:19,148 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:15:19,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-10-26 04:15:19,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:19,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:19,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:19,148 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-26 04:15:19,149 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:19,149 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~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; 269#L19-2 [2020-10-26 04:15:19,149 INFO L796 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2020-10-26 04:15:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-26 04:15:19,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:19,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540638519] [2020-10-26 04:15:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2020-10-26 04:15:19,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:19,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442841738] [2020-10-26 04:15:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2020-10-26 04:15:19,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:19,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413657579] [2020-10-26 04:15:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:19,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:19,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:19,202 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:19,203 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:19,203 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:19,203 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:19,203 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:19,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:19,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:19,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2020-10-26 04:15:19,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:19,203 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:19,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:19,301 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:19,308 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:19,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:19,350 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:19,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:19,395 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:19,437 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,466 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:19,468 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:19,468 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:19,468 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:19,468 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:19,468 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:19,468 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:19,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:19,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2020-10-26 04:15:19,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:19,468 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:19,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:19,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:19,608 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:19,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:19,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:19,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:19,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:19,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:19,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:19,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,622 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 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:19,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:19,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:19,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:19,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:19,661 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:19,661 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:19,671 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:19,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:19,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:19,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:19,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:19,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:19,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:19,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:19,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:19,716 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:19,716 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:19,721 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:19,721 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:19,721 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:19,721 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-26 04:15:19,751 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:19,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:19,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:19,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:19,839 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 [2020-10-26 04:15:19,840 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-26 04:15:19,852 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2020-10-26 04:15:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-26 04:15:19,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-26 04:15:19,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-26 04:15:19,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-26 04:15:19,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:19,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2020-10-26 04:15:19,856 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:19,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-10-26 04:15:19,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:15:19,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:15:19,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:15:19,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:15:19,856 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:19,857 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:19,857 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:19,857 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:15:19,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:15:19,857 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:19,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:15:19,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:15:19 BoogieIcfgContainer [2020-10-26 04:15:19,865 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:15:19,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:15:19,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:15:19,866 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:15:19,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:15" (3/4) ... [2020-10-26 04:15:19,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:15:19,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:15:19,873 INFO L168 Benchmark]: Toolchain (without parser) took 4539.50 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 22.2 MB in the beginning and 43.8 MB in the end (delta: -21.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:19,874 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:19,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.39 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 24.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:19,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 44.0 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:19,877 INFO L168 Benchmark]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 44.0 MB. Free memory was 23.2 MB in the beginning and 22.4 MB in the end (delta: 832.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:19,878 INFO L168 Benchmark]: RCFGBuilder took 254.78 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 34.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:19,879 INFO L168 Benchmark]: BuchiAutomizer took 3952.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.2 MB in the beginning and 44.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:19,879 INFO L168 Benchmark]: Witness Printer took 5.70 ms. Allocated memory is still 67.1 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:19,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.39 ms. Allocated memory is still 44.0 MB. Free memory was 21.5 MB in the beginning and 24.6 MB in the end (delta: -3.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 44.0 MB. Free memory was 24.6 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 44.0 MB. Free memory was 23.2 MB in the beginning and 22.4 MB in the end (delta: 832.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 254.78 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 22.3 MB in the beginning and 34.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3952.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 34.2 MB in the beginning and 44.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.70 ms. Allocated memory is still 67.1 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...