./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-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/BradleyMannaSipma-CAV2005-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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:15:03,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:15:03,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:15:03,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:15:03,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:15:03,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:15:03,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:15:03,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:15:03,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:15:03,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:15:03,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:15:03,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:15:03,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:15:03,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:15:03,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:15:03,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:15:03,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:15:03,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:15:03,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:15:03,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:15:03,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:15:03,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:15:03,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:15:03,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:15:03,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:15:03,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:15:03,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:15:03,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:15:03,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:15:03,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:15:03,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:15:03,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:15:03,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:15:03,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:15:03,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:15:03,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:15:03,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:15:03,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:15:03,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:15:03,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:15:03,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:15:03,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:15:03,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:15:03,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:15:03,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:15:03,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:15:03,201 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:15:03,201 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:15:03,201 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:15:03,202 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:15:03,202 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:15:03,202 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:15:03,202 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:15:03,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:15:03,203 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:15:03,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:15:03,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:15:03,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:15:03,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:15:03,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:15:03,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:15:03,205 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:15:03,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:15:03,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:15:03,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:15:03,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:15:03,207 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:15:03,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:15:03,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:15:03,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:15:03,208 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:15:03,209 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:15:03,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2020-10-26 04:15:03,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:15:03,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:15:03,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:15:03,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:15:03,730 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:15:03,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-10-26 04:15:03,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e1a167b/af7372228c774ce39e5cb9e66c0c39ac/FLAG4a5600611 [2020-10-26 04:15:04,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:15:04,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-10-26 04:15:04,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e1a167b/af7372228c774ce39e5cb9e66c0c39ac/FLAG4a5600611 [2020-10-26 04:15:04,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e1a167b/af7372228c774ce39e5cb9e66c0c39ac [2020-10-26 04:15:04,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:15:04,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:15:04,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:04,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:15:04,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:15:04,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:04" (1/1) ... [2020-10-26 04:15:04,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383ff76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:04, skipping insertion in model container [2020-10-26 04:15:04,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:04" (1/1) ... [2020-10-26 04:15:04,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:15:04,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:15:05,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:05,180 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:15:05,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:05,221 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:15:05,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05 WrapperNode [2020-10-26 04:15:05,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:05,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:05,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:15:05,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:15:05,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:05,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:15:05,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:15:05,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:15:05,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (1/1) ... [2020-10-26 04:15:05,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:15:05,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:15:05,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:15:05,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:15:05,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (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 04:15:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:15:05,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:15:05,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:15:05,579 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:15:05,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:05 BoogieIcfgContainer [2020-10-26 04:15:05,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:15:05,582 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:15:05,582 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:15:05,587 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:15:05,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:05,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:15:04" (1/3) ... [2020-10-26 04:15:05,589 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c2c3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:05, skipping insertion in model container [2020-10-26 04:15:05,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:05,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:05" (2/3) ... [2020-10-26 04:15:05,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c2c3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:05, skipping insertion in model container [2020-10-26 04:15:05,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:05,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:05" (3/3) ... [2020-10-26 04:15:05,592 INFO L373 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2020-10-26 04:15:05,650 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:15:05,650 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:15:05,651 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:15:05,651 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:15:05,651 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:15:05,651 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:15:05,651 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:15:05,651 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:15:05,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:15:05,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:05,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:05,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:05,695 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:15:05,696 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:05,696 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:15:05,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:15:05,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:05,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:05,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:05,698 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:15:05,698 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:05,708 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2020-10-26 04:15:05,708 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2020-10-26 04:15:05,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-26 04:15:05,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:05,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988685848] [2020-10-26 04:15:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,859 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:05,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-10-26 04:15:05,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:05,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196488311] [2020-10-26 04:15:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,884 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-10-26 04:15:05,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:05,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143470574] [2020-10-26 04:15:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:05,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:05,907 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:06,044 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2020-10-26 04:15:06,167 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:06,167 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:06,168 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:06,168 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:06,168 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:06,168 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,168 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:06,168 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:06,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2020-10-26 04:15:06,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:06,169 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:06,193 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 04:15:06,201 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 04:15:06,217 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 04:15:06,222 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 04:15:06,226 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 04:15:06,230 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 04:15:06,325 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:06,326 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 04:15:06,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:06,337 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 04:15:06,347 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:06,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:06,387 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:06,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:06,563 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:06,566 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:06,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:06,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:06,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:06,566 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:06,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:06,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:06,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2020-10-26 04:15:06,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:06,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:06,570 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 04:15:06,584 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 04:15:06,588 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 04:15:06,592 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 04:15:06,595 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 04:15:06,598 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 04:15:06,673 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:06,681 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:06,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:06,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:06,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:06,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:06,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:06,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:06,714 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:06,724 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-26 04:15:06,724 INFO L444 ModelExtractionUtils]: 4 out of 10 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:06,735 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:06,740 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-26 04:15:06,741 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:06,741 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2020-10-26 04:15:06,777 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-26 04:15:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:06,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-26 04:15:06,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:06,845 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:06,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:06,848 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 04:15:06,864 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-26 04:15:06,866 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-26 04:15:06,933 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2020-10-26 04:15:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-26 04:15:06,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-26 04:15:06,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:06,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-26 04:15:06,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:06,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-26 04:15:06,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:06,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-10-26 04:15:06,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:06,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-10-26 04:15:06,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:15:06,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-10-26 04:15:06,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-26 04:15:06,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:06,952 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:15:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-26 04:15:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-26 04:15:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-26 04:15:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-10-26 04:15:06,986 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:15:06,986 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:15:06,986 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:15:06,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-10-26 04:15:06,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:06,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:06,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:06,988 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:15:06,988 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:06,989 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2020-10-26 04:15:06,989 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2020-10-26 04:15:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2020-10-26 04:15:06,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:06,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876774792] [2020-10-26 04:15:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:06,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:07,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,006 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:07,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2020-10-26 04:15:07,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:07,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571081513] [2020-10-26 04:15:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:07,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:07,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:07,023 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2020-10-26 04:15:07,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:07,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941148283] [2020-10-26 04:15:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:07,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:07,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:07,040 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:07,125 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:07,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:07,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:07,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:07,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:07,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:07,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:07,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:07,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2020-10-26 04:15:07,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:07,127 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:07,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:07,137 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 04:15:07,141 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 04:15:07,165 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 04:15:07,169 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 04:15:07,180 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 04:15:07,268 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:07,268 INFO L404 LassoAnalysis]: Checking for nontermination... 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 04:15:07,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:07,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:07,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:07,280 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:07,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:07,320 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:07,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:07,325 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:07,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:07,365 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 04:15:07,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:07,407 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 04:15:07,569 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:07,572 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:07,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:07,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:07,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:07,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:07,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:07,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:07,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:07,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2020-10-26 04:15:07,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:07,573 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:07,575 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 04:15:07,587 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 04:15:07,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:07,605 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 04:15:07,608 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 04:15:07,610 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 04:15:07,808 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2020-10-26 04:15:07,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:07,851 INFO L489 LassoAnalysis]: Using template 'affine'. 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 04:15:07,860 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 04:15:07,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:07,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:07,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:07,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:07,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:07,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:07,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:07,914 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 04:15:07,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:07,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:07,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:07,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:07,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:07,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:07,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:07,920 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:07,960 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 04:15:07,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:07,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:07,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:07,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:07,967 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:07,968 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 04:15:07,977 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:07,992 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-26 04:15:07,992 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 2 variables to zero. 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 04:15:07,999 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,003 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-10-26 04:15:08,003 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:08,004 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0, 1*ULTIMATE.start_main_~y1~0 >= 0] [2020-10-26 04:15:08,043 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-10-26 04:15:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:08,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:08,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:08,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:08,152 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 04:15:08,152 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-10-26 04:15:08,153 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-26 04:15:08,198 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2020-10-26 04:15:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-10-26 04:15:08,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-26 04:15:08,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:08,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-26 04:15:08,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:08,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-26 04:15:08,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:08,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2020-10-26 04:15:08,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:08,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2020-10-26 04:15:08,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-26 04:15:08,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-26 04:15:08,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-10-26 04:15:08,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:08,205 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-10-26 04:15:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-10-26 04:15:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-26 04:15:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:15:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-10-26 04:15:08,208 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-10-26 04:15:08,208 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-10-26 04:15:08,208 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:15:08,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2020-10-26 04:15:08,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:15:08,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:08,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:08,210 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-10-26 04:15:08,210 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:08,210 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 156#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 162#L20-2 assume !!(main_~y1~0 != main_~y2~0); 161#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 163#L20-2 assume !!(main_~y1~0 != main_~y2~0); 164#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 157#L20-2 [2020-10-26 04:15:08,210 INFO L796 eck$LassoCheckResult]: Loop: 157#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 157#L20-2 [2020-10-26 04:15:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:08,211 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2020-10-26 04:15:08,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:08,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661331468] [2020-10-26 04:15:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,229 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:08,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2020-10-26 04:15:08,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:08,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640190948] [2020-10-26 04:15:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,244 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2020-10-26 04:15:08,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:08,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331557953] [2020-10-26 04:15:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:08,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:08,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:08,357 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:08,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:08,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:08,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:08,358 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:08,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:08,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:08,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2020-10-26 04:15:08,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:08,358 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:08,361 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 04:15:08,365 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 04:15:08,370 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 04:15:08,373 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 04:15:08,378 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 04:15:08,395 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 04:15:08,485 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:08,486 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:08,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:08,496 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:08,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 04:15:08,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:08,543 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 04:15:08,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:08,548 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:08,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:08,591 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:08,596 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:08,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:08,641 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:08,647 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 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:08,675 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:08,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:08,838 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:08,840 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:08,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:08,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:08,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:08,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:08,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:08,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:08,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:08,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2020-10-26 04:15:08,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:08,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:08,843 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 04:15:08,857 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 04:15:08,862 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 04:15:08,866 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 04:15:08,876 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 04:15:08,893 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 04:15:08,983 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:08,984 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:08,995 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 04:15:08,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:08,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:08,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:08,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:08,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:08,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:09,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,002 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:09,045 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 04:15:09,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:09,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:09,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:09,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:09,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:09,051 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:09,052 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 04:15:09,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,088 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 04:15:09,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:09,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:09,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:09,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:09,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:09,094 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:09,106 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 04:15:09,142 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 04:15:09,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:09,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:09,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:09,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:09,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:09,147 INFO L402 nArgumentSynthesizer]: A total of 2 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 04:15:09,153 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 04:15:09,189 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 04:15:09,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:09,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:09,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:09,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:09,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:09,197 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 04:15:09,206 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:09,218 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-10-26 04:15:09,218 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. 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 04:15:09,226 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,229 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-26 04:15:09,229 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:09,230 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2020-10-26 04:15:09,255 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-26 04:15:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,348 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,349 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 04:15:09,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-10-26 04:15:09,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-10-26 04:15:09,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2020-10-26 04:15:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-10-26 04:15:09,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-26 04:15:09,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:09,400 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,466 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,467 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 04:15:09,467 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2020-10-26 04:15:09,468 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-10-26 04:15:09,512 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2020-10-26 04:15:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-10-26 04:15:09,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-26 04:15:09,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:09,513 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:09,573 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:09,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:09,574 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 04:15:09,575 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-10-26 04:15:09,575 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-10-26 04:15:09,630 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2020-10-26 04:15:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-26 04:15:09,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-26 04:15:09,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:09,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-26 04:15:09,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:09,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-26 04:15:09,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:09,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2020-10-26 04:15:09,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:09,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2020-10-26 04:15:09,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-26 04:15:09,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-26 04:15:09,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2020-10-26 04:15:09,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:09,635 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-10-26 04:15:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2020-10-26 04:15:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2020-10-26 04:15:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:15:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-26 04:15:09,636 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-26 04:15:09,636 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-26 04:15:09,636 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:15:09,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-26 04:15:09,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:09,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:09,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:09,637 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:15:09,637 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:09,637 INFO L794 eck$LassoCheckResult]: Stem: 334#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 335#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 336#L20-2 [2020-10-26 04:15:09,638 INFO L796 eck$LassoCheckResult]: Loop: 336#L20-2 assume !!(main_~y1~0 != main_~y2~0); 337#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 336#L20-2 [2020-10-26 04:15:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,638 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2020-10-26 04:15:09,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:09,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642965310] [2020-10-26 04:15:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2020-10-26 04:15:09,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:09,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555500452] [2020-10-26 04:15:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,659 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:09,660 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2020-10-26 04:15:09,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:09,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998181909] [2020-10-26 04:15:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:09,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:09,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:09,708 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:09,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:09,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:09,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:09,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:09,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:09,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:09,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2020-10-26 04:15:09,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:09,709 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:09,712 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 04:15:09,719 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 04:15:09,722 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 04:15:09,727 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 04:15:09,730 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 04:15:09,743 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 04:15:09,860 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:09,860 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:09,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:09,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:09,872 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:09,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:09,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:09,900 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:09,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:09,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:09,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} 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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:09,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:09,956 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:09,956 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:09,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:09,980 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:10,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:10,152 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:10,154 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:10,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:10,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:10,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:10,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:10,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:10,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:10,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2020-10-26 04:15:10,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:10,154 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:10,156 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 04:15:10,163 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 04:15:10,166 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 04:15:10,169 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 04:15:10,174 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 04:15:10,204 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 04:15:10,313 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:10,313 INFO L489 LassoAnalysis]: Using template 'affine'. 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 04:15:10,319 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 04:15:10,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:10,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:10,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:10,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:10,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:10,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:10,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:10,324 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) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,347 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 04:15:10,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:10,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:10,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:10,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:10,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:10,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:10,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:10,352 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 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 04:15:10,377 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 04:15:10,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:10,378 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:10,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:10,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:10,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:10,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:10,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:10,382 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:10,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:10,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:10,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:10,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:10,423 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:10,424 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:10,434 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 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,463 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 04:15:10,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:10,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:10,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:10,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:10,471 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:10,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:10,479 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:10,498 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-26 04:15:10,498 INFO L444 ModelExtractionUtils]: 4 out of 10 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:10,510 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,519 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-26 04:15:10,520 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:10,520 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2020-10-26 04:15:10,548 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-26 04:15:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-26 04:15:10,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:10,609 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:15:10,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:10,626 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 04:15:10,627 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 04:15:10,627 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-26 04:15:10,673 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2020-10-26 04:15:10,674 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 04:15:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:15:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-10-26 04:15:10,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-26 04:15:10,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:10,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-26 04:15:10,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:10,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-26 04:15:10,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:10,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2020-10-26 04:15:10,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:10,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2020-10-26 04:15:10,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-10-26 04:15:10,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-26 04:15:10,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2020-10-26 04:15:10,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:10,677 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-10-26 04:15:10,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2020-10-26 04:15:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-10-26 04:15:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-26 04:15:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2020-10-26 04:15:10,679 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-26 04:15:10,679 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-10-26 04:15:10,679 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:15:10,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2020-10-26 04:15:10,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:15:10,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:10,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:10,681 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-26 04:15:10,682 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:15:10,682 INFO L794 eck$LassoCheckResult]: Stem: 394#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 395#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 398#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 402#L20-2 assume !!(main_~y1~0 != main_~y2~0); 400#L20 [2020-10-26 04:15:10,682 INFO L796 eck$LassoCheckResult]: Loop: 400#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 401#L20-2 assume !!(main_~y1~0 != main_~y2~0); 400#L20 [2020-10-26 04:15:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2020-10-26 04:15:10,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:10,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956157980] [2020-10-26 04:15:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,693 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2020-10-26 04:15:10,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:10,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329658841] [2020-10-26 04:15:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,704 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2020-10-26 04:15:10,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:10,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138735165] [2020-10-26 04:15:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:10,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:10,718 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:10,826 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:10,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:10,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:10,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:10,827 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:10,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:10,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:10,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2020-10-26 04:15:10,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:10,828 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:10,829 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 04:15:10,838 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 04:15:10,841 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 04:15:10,844 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 04:15:10,849 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 04:15:10,853 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 04:15:10,976 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:10,976 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:10,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:10,981 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:10,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:10,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:11,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:11,022 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:11,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:11,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:11,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:11,052 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:11,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:11,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:11,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:11,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:11,109 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:11,109 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:11,132 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:11,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:11,482 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:11,484 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:11,485 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:11,485 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:11,485 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:11,485 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:11,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:11,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:11,486 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2020-10-26 04:15:11,486 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:11,486 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:11,488 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 04:15:11,491 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 04:15:11,495 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 04:15:11,498 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 04:15:11,501 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 04:15:11,503 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 04:15:11,663 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:11,664 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:11,671 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 04:15:11,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:11,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:11,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:11,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,686 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 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,709 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 04:15:11,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:11,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:11,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:11,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:11,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:11,713 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 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,737 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 04:15:11,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:11,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:11,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,741 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:11,741 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:11,746 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 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,769 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 04:15:11,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,771 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:11,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:11,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:11,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,772 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:11,772 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:11,780 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:11,815 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 04:15:11,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:11,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:11,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:11,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:11,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,819 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:11,860 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 04:15:11,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:11,862 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-10-26 04:15:11,862 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:15:11,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:11,876 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2020-10-26 04:15:11,876 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:11,942 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-26 04:15:11,942 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:11,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:11,957 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 4. [2020-10-26 04:15:11,958 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:11,958 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 3*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0, 1*ULTIMATE.start_main_~y2~0 >= 0] [2020-10-26 04:15:11,995 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-10-26 04:15:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,102 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 04:15:12,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-26 04:15:12,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-26 04:15:12,144 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2020-10-26 04:15:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-26 04:15:12,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:12,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:12,145 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,201 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,229 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 04:15:12,230 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-26 04:15:12,230 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-26 04:15:12,297 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 11 states and 15 transitions. Complement of second has 6 states. [2020-10-26 04:15:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-10-26 04:15:12,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:12,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:12,299 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:15:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:12,381 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:12,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:12,429 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 04:15:12,430 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-26 04:15:12,430 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-26 04:15:12,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2020-10-26 04:15:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-10-26 04:15:12,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 04:15:12,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:12,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-26 04:15:12,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:12,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:15:12,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:12,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-10-26 04:15:12,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 04:15:12,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2020-10-26 04:15:12,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-26 04:15:12,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-26 04:15:12,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-10-26 04:15:12,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:15:12,493 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-26 04:15:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-10-26 04:15:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2020-10-26 04:15:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-26 04:15:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-10-26 04:15:12,496 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:15:12,496 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-26 04:15:12,496 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:15:12,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-10-26 04:15:12,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-26 04:15:12,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:12,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:12,498 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-10-26 04:15:12,498 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-10-26 04:15:12,499 INFO L794 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 564#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 565#L20-2 assume !!(main_~y1~0 != main_~y2~0); 567#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 570#L20-2 assume !!(main_~y1~0 != main_~y2~0); 569#L20 [2020-10-26 04:15:12,499 INFO L796 eck$LassoCheckResult]: Loop: 569#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 568#L20-2 assume !!(main_~y1~0 != main_~y2~0); 567#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 570#L20-2 assume !!(main_~y1~0 != main_~y2~0); 569#L20 [2020-10-26 04:15:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,499 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2020-10-26 04:15:12,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:12,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257170094] [2020-10-26 04:15:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2020-10-26 04:15:12,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:12,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879371424] [2020-10-26 04:15:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,545 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2020-10-26 04:15:12,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:12,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983575691] [2020-10-26 04:15:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:12,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:12,570 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:12,613 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:12,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:12,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:12,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:12,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:12,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:12,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:12,613 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:12,613 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration6_Loop [2020-10-26 04:15:12,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:12,614 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:12,615 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 04:15:12,619 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 04:15:12,623 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 04:15:12,782 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:12,782 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:12,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:12,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:12,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:12,790 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:12,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:12,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:12,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:12,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:12,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:12,843 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:12,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:12,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:13,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:13,340 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:13,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:13,341 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:13,341 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:13,341 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:13,341 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:13,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:13,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:13,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration6_Loop [2020-10-26 04:15:13,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:13,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:13,342 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 04:15:13,347 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 04:15:13,351 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 04:15:13,510 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:13,510 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:13,516 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 04:15:13,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:13,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:13,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:13,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:13,520 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:13,520 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:13,524 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 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:13,546 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 04:15:13,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:13,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:13,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:13,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:13,550 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:15:13,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:15:13,554 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:13,577 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 04:15:13,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:13,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:13,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:13,579 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:15:13,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:13,582 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 04:15:13,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:15:13,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:13,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:13,599 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:13,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:13,614 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:13,614 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:13,614 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:13,646 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:13,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:15:13,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:13,674 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:15:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:13,708 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:15:13,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-10-26 04:15:13,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 27 states and 41 transitions. Complement of second has 6 states. [2020-10-26 04:15:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-26 04:15:13,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 04:15:13,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:13,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-26 04:15:13,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:13,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-26 04:15:13,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:13,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2020-10-26 04:15:13,735 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:13,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-10-26 04:15:13,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:15:13,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:15:13,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:15:13,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:15:13,736 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:13,736 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:13,737 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:13,737 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-26 04:15:13,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:15:13,737 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:13,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:15:13,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:15:13 BoogieIcfgContainer [2020-10-26 04:15:13,744 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:15:13,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:15:13,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:15:13,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:15:13,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:05" (3/4) ... [2020-10-26 04:15:13,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:15:13,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:15:13,751 INFO L168 Benchmark]: Toolchain (without parser) took 8873.26 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 27.4 MB in the beginning and 47.9 MB in the end (delta: -20.6 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,752 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:13,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.24 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 29.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.63 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 28.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,754 INFO L168 Benchmark]: Boogie Preprocessor took 26.76 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 27.6 MB in the end (delta: 925.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:13,754 INFO L168 Benchmark]: RCFGBuilder took 286.48 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 41.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,755 INFO L168 Benchmark]: BuchiAutomizer took 8162.10 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 41.4 MB in the beginning and 49.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,756 INFO L168 Benchmark]: Witness Printer took 5.03 ms. Allocated memory is still 107.0 MB. Free memory was 49.0 MB in the beginning and 47.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:13,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.24 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 29.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.63 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 28.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.76 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 27.6 MB in the end (delta: 925.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 286.48 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 41.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8162.10 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 41.4 MB in the beginning and 49.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.03 ms. Allocated memory is still 107.0 MB. Free memory was 49.0 MB in the beginning and 47.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function 2 * y1 + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One nondeterministic module has affine ranking function 3 * y2 + -2 * y1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 6.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 44 SDslu, 3 SDs, 0 SdLazy, 98 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf89 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 105ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...