./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Parallel.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Parallel.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 fa16f28cdab01c0d49bf2bd46e148912a30ce280 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:33:21,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:33:21,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:33:21,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:33:21,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:33:21,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:33:21,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:33:21,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:33:21,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:33:21,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:33:21,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:33:21,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:33:21,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:33:21,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:33:21,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:33:21,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:33:21,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:33:21,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:33:21,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:33:21,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:33:21,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:33:21,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:33:21,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:33:21,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:33:21,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:33:21,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:33:21,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:33:21,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:33:21,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:33:21,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:33:21,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:33:21,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:33:21,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:33:21,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:33:21,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:33:21,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:33:21,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:33:21,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:33:21,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:33:21,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:33:21,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:33:21,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:33:21,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:33:21,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:33:21,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:33:21,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:33:21,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:33:21,328 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:33:21,329 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:33:21,329 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:33:21,329 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:33:21,329 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:33:21,329 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:33:21,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:33:21,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:33:21,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:33:21,331 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:33:21,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:33:21,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:33:21,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:33:21,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:33:21,332 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:33:21,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:33:21,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:33:21,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:33:21,333 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:33:21,334 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:33:21,334 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa16f28cdab01c0d49bf2bd46e148912a30ce280 [2020-10-20 06:33:21,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:33:21,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:33:21,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:33:21,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:33:21,575 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:33:21,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Parallel.c [2020-10-20 06:33:21,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec6ca95/e4d0b1fe40614f1e9eb8078a239b7888/FLAG841b6deef [2020-10-20 06:33:22,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:33:22,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Parallel.c [2020-10-20 06:33:22,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec6ca95/e4d0b1fe40614f1e9eb8078a239b7888/FLAG841b6deef [2020-10-20 06:33:22,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ec6ca95/e4d0b1fe40614f1e9eb8078a239b7888 [2020-10-20 06:33:22,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:33:22,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:33:22,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:22,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:33:22,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:33:22,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f94e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22, skipping insertion in model container [2020-10-20 06:33:22,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:33:22,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:33:22,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:22,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:33:22,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:22,891 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:33:22,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22 WrapperNode [2020-10-20 06:33:22,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:22,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:22,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:33:22,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:33:22,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:22,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:33:22,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:33:22,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:33:22,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... [2020-10-20 06:33:22,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:33:22,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:33:22,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:33:22,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:33:22,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:33:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:33:23,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:33:23,189 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:33:23,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:23 BoogieIcfgContainer [2020-10-20 06:33:23,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:33:23,192 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:33:23,192 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:33:23,196 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:33:23,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:23,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:33:22" (1/3) ... [2020-10-20 06:33:23,198 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a22a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:23, skipping insertion in model container [2020-10-20 06:33:23,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:23,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:22" (2/3) ... [2020-10-20 06:33:23,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a22a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:23, skipping insertion in model container [2020-10-20 06:33:23,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:23,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:23" (3/3) ... [2020-10-20 06:33:23,201 INFO L373 chiAutomizerObserver]: Analyzing ICFG Parallel.c [2020-10-20 06:33:23,260 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:33:23,261 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:33:23,261 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:33:23,261 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:33:23,261 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:33:23,262 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:33:23,262 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:33:23,262 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:33:23,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:33:23,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:23,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:23,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:23,308 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:33:23,308 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:23,309 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:33:23,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:33:23,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:23,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:23,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:23,311 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:33:23,311 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:23,320 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L23-2true [2020-10-20 06:33:23,320 INFO L796 eck$LassoCheckResult]: Loop: 3#L23-2true assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 5#L23true assume main_~x~0 >= 0;main_~x~0 := main_~x~0 - 1; 3#L23-2true [2020-10-20 06:33:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:33:23,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:23,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390405796] [2020-10-20 06:33:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,439 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-20 06:33:23,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:23,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939008894] [2020-10-20 06:33:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,458 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-20 06:33:23,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:23,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973518766] [2020-10-20 06:33:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:23,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:23,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:23,559 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:23,560 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:23,560 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:23,560 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:23,561 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:23,561 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,561 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:23,562 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:23,562 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2020-10-20 06:33:23,562 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:23,563 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:23,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,734 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:23,735 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:23,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:23,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:23,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:23,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:23,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:23,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:23,816 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:23,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:23,876 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:23,878 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:23,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:23,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:23,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:23,878 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:23,878 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:23,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:23,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2020-10-20 06:33:23,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:23,879 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:23,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:23,952 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:23,958 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:23,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:23,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:23,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:23,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:23,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:23,982 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:23,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:23,993 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:24,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:24,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:24,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:24,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:24,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:24,039 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:33:24,045 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,074 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:24,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:24,077 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:24,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:24,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:24,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:24,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:24,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:24,084 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:24,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:33:24,097 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:24,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:24,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:24,108 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,109 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-10-20 06:33:24,136 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:24,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:24,190 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:33:24,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:33:24,211 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 06:33:24,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-20 06:33:24,263 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-10-20 06:33:24,264 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 [2020-10-20 06:33:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-20 06:33:24,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:33:24,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:24,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-20 06:33:24,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:24,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-20 06:33:24,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:24,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2020-10-20 06:33:24,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:24,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 8 states and 11 transitions. [2020-10-20 06:33:24,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:33:24,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:33:24,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-20 06:33:24,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:33:24,281 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-20 06:33:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-20 06:33:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-20 06:33:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:33:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-20 06:33:24,334 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:33:24,334 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-20 06:33:24,334 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:33:24,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-20 06:33:24,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:33:24,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:24,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:24,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:33:24,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:33:24,336 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 65#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2020-10-20 06:33:24,336 INFO L796 eck$LassoCheckResult]: Loop: 61#L23 assume !(main_~x~0 >= 0);main_~y~0 := main_~y~0 - 1; 60#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2020-10-20 06:33:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:33:24,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:24,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887825947] [2020-10-20 06:33:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:24,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-20 06:33:24,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:24,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461638066] [2020-10-20 06:33:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,357 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:24,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:24,357 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-10-20 06:33:24,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:24,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278362458] [2020-10-20 06:33:24,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:24,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:24,374 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:24,409 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:24,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:24,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:24,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:24,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:33:24,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:24,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:24,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2020-10-20 06:33:24,410 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:24,410 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:24,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,485 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:24,485 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:24,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:33:24,499 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:24,499 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:24,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:24,547 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:33:24,553 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:24,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:33:24,606 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:24,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:33:24,679 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,771 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:33:24,773 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:33:24,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:33:24,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:33:24,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:33:24,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:33:24,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:33:24,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:33:24,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2020-10-20 06:33:24,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:33:24,774 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:33:24,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:33:24,841 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:33:24,841 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:33:24,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:24,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:24,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:24,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:24,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:24,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:24,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,862 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:33:24,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:33:24,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:24,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:24,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:24,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:24,917 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:33:24,917 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,923 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,960 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 [2020-10-20 06:33:24,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:33:24,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:33:24,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:33:24,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:33:24,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:33:24,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:33:24,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:33:24,967 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:33:24,969 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:33:24,969 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:33:24,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:33:24,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:33:24,973 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:33:24,974 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-20 06:33:24,994 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:33:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:25,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:33:25,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:33:25,020 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:33:25,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:33:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:33:25,101 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:33:25,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:33:25,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2020-10-20 06:33:25,126 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 [2020-10-20 06:33:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:33:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-20 06:33:25,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 06:33:25,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:25,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:33:25,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:25,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 06:33:25,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:33:25,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-10-20 06:33:25,129 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:25,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-10-20 06:33:25,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:33:25,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:33:25,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:33:25,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:33:25,130 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:25,130 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:25,130 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:33:25,130 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:33:25,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:33:25,130 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:33:25,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:33:25,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:33:25 BoogieIcfgContainer [2020-10-20 06:33:25,137 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:33:25,138 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:33:25,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:33:25,138 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:33:25,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:23" (3/4) ... [2020-10-20 06:33:25,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:33:25,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:33:25,145 INFO L168 Benchmark]: Toolchain (without parser) took 2686.68 ms. Allocated memory was 35.1 MB in the beginning and 50.9 MB in the end (delta: 15.7 MB). Free memory was 9.5 MB in the beginning and 29.3 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:33:25,146 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 34.6 MB. Free memory was 13.7 MB in the beginning and 13.7 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.56 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 8.6 MB in the beginning and 29.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,148 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 44.6 MB. Free memory was 29.0 MB in the beginning and 27.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,149 INFO L168 Benchmark]: Boogie Preprocessor took 29.60 ms. Allocated memory is still 44.6 MB. Free memory was 27.5 MB in the beginning and 26.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,150 INFO L168 Benchmark]: RCFGBuilder took 230.09 ms. Allocated memory is still 44.6 MB. Free memory was 26.3 MB in the beginning and 17.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,151 INFO L168 Benchmark]: BuchiAutomizer took 1945.66 ms. Allocated memory was 44.6 MB in the beginning and 50.9 MB in the end (delta: 6.3 MB). Free memory was 17.4 MB in the beginning and 29.7 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:33:25,152 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 50.9 MB. Free memory was 29.7 MB in the beginning and 29.3 MB in the end (delta: 413.4 kB). Peak memory consumption was 413.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:25,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 34.6 MB. Free memory was 13.7 MB in the beginning and 13.7 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 424.56 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 8.6 MB in the beginning and 29.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 44.6 MB. Free memory was 29.0 MB in the beginning and 27.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.60 ms. Allocated memory is still 44.6 MB. Free memory was 27.5 MB in the beginning and 26.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 230.09 ms. Allocated memory is still 44.6 MB. Free memory was 26.3 MB in the beginning and 17.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1945.66 ms. Allocated memory was 44.6 MB in the beginning and 50.9 MB in the end (delta: 6.3 MB). Free memory was 17.4 MB in the beginning and 29.7 MB in the end (delta: -12.2 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.96 ms. Allocated memory is still 50.9 MB. Free memory was 29.7 MB in the beginning and 29.3 MB in the end (delta: 413.4 kB). Peak memory consumption was 413.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...