./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.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-numeric/rec_counter1.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 82bd2b65619821bf052931b3532da39241349d4f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:16:07,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:16:07,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:16:07,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:16:07,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:16:07,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:16:07,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:16:07,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:16:07,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:16:07,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:16:07,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:16:07,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:16:07,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:16:07,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:16:07,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:16:07,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:16:07,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:16:07,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:16:07,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:16:07,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:16:07,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:16:07,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:16:07,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:16:07,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:16:07,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:16:07,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:16:07,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:16:07,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:16:07,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:16:07,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:16:07,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:16:07,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:16:07,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:16:07,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:16:07,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:16:07,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:16:07,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:16:07,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:16:07,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:16:07,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:16:07,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:16:07,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:16:07,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:16:07,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:16:07,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:16:07,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:16:07,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:16:07,628 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:16:07,628 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:16:07,628 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:16:07,629 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:16:07,629 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:16:07,629 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:16:07,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:16:07,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:16:07,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:16:07,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:16:07,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:16:07,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:16:07,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:16:07,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:16:07,631 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:16:07,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:16:07,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:16:07,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:16:07,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:16:07,632 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:16:07,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:16:07,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:16:07,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:16:07,633 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:16:07,634 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:16:07,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bd2b65619821bf052931b3532da39241349d4f [2020-10-26 04:16:08,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:16:08,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:16:08,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:16:08,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:16:08,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:16:08,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2020-10-26 04:16:08,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb643bf37/c9af53a329784b2998fac07b5dfd11bd/FLAGd44498f9a [2020-10-26 04:16:08,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:16:08,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2020-10-26 04:16:08,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb643bf37/c9af53a329784b2998fac07b5dfd11bd/FLAGd44498f9a [2020-10-26 04:16:09,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb643bf37/c9af53a329784b2998fac07b5dfd11bd [2020-10-26 04:16:09,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:16:09,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:16:09,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:09,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:16:09,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:16:09,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434e39ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09, skipping insertion in model container [2020-10-26 04:16:09,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:16:09,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:16:09,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:09,407 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:16:09,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:16:09,438 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:16:09,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09 WrapperNode [2020-10-26 04:16:09,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:16:09,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:09,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:16:09,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:16:09,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:16:09,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:16:09,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:16:09,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:16:09,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... [2020-10-26 04:16:09,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:16:09,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:16:09,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:16:09,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:16:09,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:09,580 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-26 04:16:09,580 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-26 04:16:09,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:16:09,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:16:09,784 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:16:09,784 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:16:09,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:09 BoogieIcfgContainer [2020-10-26 04:16:09,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:16:09,788 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:16:09,788 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:16:09,793 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:16:09,794 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:09,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:16:09" (1/3) ... [2020-10-26 04:16:09,796 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fab4bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:09, skipping insertion in model container [2020-10-26 04:16:09,796 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:09,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:16:09" (2/3) ... [2020-10-26 04:16:09,797 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1fab4bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:16:09, skipping insertion in model container [2020-10-26 04:16:09,798 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:16:09,798 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:09" (3/3) ... [2020-10-26 04:16:09,800 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2020-10-26 04:16:09,872 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:16:09,872 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:16:09,872 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:16:09,873 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:16:09,873 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:16:09,873 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:16:09,873 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:16:09,874 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:16:09,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-26 04:16:09,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-26 04:16:09,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:09,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:09,934 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:16:09,934 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:09,934 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:16:09,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-10-26 04:16:09,937 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-26 04:16:09,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:09,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:09,939 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 04:16:09,939 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:16:09,950 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2020-10-26 04:16:09,951 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2020-10-26 04:16:09,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:09,960 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2020-10-26 04:16:09,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:09,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273787941] [2020-10-26 04:16:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2020-10-26 04:16:10,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:10,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210548625] [2020-10-26 04:16:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,135 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2020-10-26 04:16:10,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:10,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818830270] [2020-10-26 04:16:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:10,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:10,158 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:10,327 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-10-26 04:16:10,472 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:10,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:10,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:10,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:10,474 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:10,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:10,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:10,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:10,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2020-10-26 04:16:10,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:10,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:10,498 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 04:16:10,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:10,747 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:10,748 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:10,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:10,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:10,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:10,765 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:10,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:10,808 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:10,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:10,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:10,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:10,851 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:10,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:10,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:10,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:10,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:10,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:10,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:10,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:10,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:10,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:10,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 6 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 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 04:16:11,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,039 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-26 04:16:11,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:11,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,118 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-6} Honda state: {rec_#in~a=-6} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=0}, {rec_#in~a=-1}] Lambdas: [0, 10, 1] Nus: [1, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:11,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,155 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,159 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-10-26 04:16:11,219 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:11,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:11,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:11,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:11,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:11,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:11,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:11,220 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2020-10-26 04:16:11,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:11,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:11,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,226 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 04:16:11,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:11,369 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:11,369 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 [2020-10-26 04:16:11,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,391 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:11,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,438 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 [2020-10-26 04:16:11,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,446 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,485 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,590 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,590 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,594 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,594 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=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 04:16:11,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,700 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 04:16:11,712 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,712 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} 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 04:16:11,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,783 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:11,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:16:11,817 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1=0} Honda state: {ULTIMATE.start_main_~res~1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:11,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:11,847 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 04:16:11,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:11,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:16:12,028 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:12,030 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:12,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:12,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:12,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:12,031 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:12,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:12,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:12,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2020-10-26 04:16:12,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:12,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:12,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:12,174 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:12,180 INFO L489 LassoAnalysis]: Using template 'affine'. 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 04:16:12,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,203 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 04:16:12,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,237 INFO L402 nArgumentSynthesizer]: A total of 0 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 04:16:12,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,269 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,271 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,271 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,276 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 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 04:16:12,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,308 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 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 04:16:12,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,339 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 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 04:16:12,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,367 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 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 04:16:12,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,402 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 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 04:16:12,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,437 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,438 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 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 04:16:12,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:12,492 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,498 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:12,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:12,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:12,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:12,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:16:12,530 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 04:16:12,553 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:12,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:12,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:12,555 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 04:16:12,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:12,574 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-26 04:16:12,574 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-26 04:16:12,598 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:12,631 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-10-26 04:16:12,631 INFO L444 ModelExtractionUtils]: 2 out of 11 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:12,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:12,655 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-10-26 04:16:12,655 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:12,656 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2020-10-26 04:16:12,694 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-26 04:16:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:12,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:16:12,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:12,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 04:16:12,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:12,845 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-26 04:16:12,847 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2020-10-26 04:16:13,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2020-10-26 04:16:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 04:16:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-10-26 04:16:13,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 04:16:13,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 04:16:13,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 04:16:13,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2020-10-26 04:16:13,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:13,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2020-10-26 04:16:13,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:16:13,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-26 04:16:13,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2020-10-26 04:16:13,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:13,068 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-10-26 04:16:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2020-10-26 04:16:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2020-10-26 04:16:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-26 04:16:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-10-26 04:16:13,102 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-26 04:16:13,102 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-26 04:16:13,102 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:16:13,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2020-10-26 04:16:13,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:13,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:13,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:13,104 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:16:13,104 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:13,105 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2020-10-26 04:16:13,105 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2020-10-26 04:16:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,105 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2020-10-26 04:16:13,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675701125] [2020-10-26 04:16:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,125 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2020-10-26 04:16:13,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464670442] [2020-10-26 04:16:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,133 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2020-10-26 04:16:13,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007174667] [2020-10-26 04:16:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:13,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-26 04:16:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 04:16:13,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007174667] [2020-10-26 04:16:13,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:16:13,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:16:13,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379890512] [2020-10-26 04:16:13,230 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:13,231 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:13,231 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:13,231 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:13,231 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:13,231 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,231 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:13,231 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:13,231 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2020-10-26 04:16:13,231 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:13,231 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:13,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,275 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:13,276 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 04:16:13,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:13,284 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:13,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:13,324 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,366 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:13,368 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:13,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:13,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:13,377 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:13,377 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:13,377 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,377 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:13,377 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:13,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2020-10-26 04:16:13,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:13,378 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:13,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:13,414 INFO L489 LassoAnalysis]: Using template 'affine'. 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 04:16:13,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:13,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:13,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:13,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:13,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:13,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:13,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:13,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,423 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:13,463 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 04:16:13,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:13,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:13,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:13,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:13,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:13,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:13,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,470 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:13,475 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:16:13,476 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:13,478 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:13,478 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:13,479 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:13,479 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,513 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:13,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 04:16:13,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:13,592 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:13,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:13,594 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 04:16:13,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:16:13,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2020-10-26 04:16:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:16:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:16:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2020-10-26 04:16:13,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2020-10-26 04:16:13,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2020-10-26 04:16:13,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2020-10-26 04:16:13,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:13,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2020-10-26 04:16:13,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:13,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2020-10-26 04:16:13,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-26 04:16:13,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-26 04:16:13,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-10-26 04:16:13,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:13,662 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-10-26 04:16:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-10-26 04:16:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-26 04:16:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-26 04:16:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2020-10-26 04:16:13,666 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-10-26 04:16:13,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:16:13,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:16:13,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:16:13,671 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2020-10-26 04:16:13,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:16:13,695 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-10-26 04:16:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:16:13,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2020-10-26 04:16:13,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:13,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2020-10-26 04:16:13,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-26 04:16:13,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-26 04:16:13,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2020-10-26 04:16:13,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:16:13,699 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-26 04:16:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2020-10-26 04:16:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-10-26 04:16:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-26 04:16:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-26 04:16:13,715 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-26 04:16:13,715 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-26 04:16:13,716 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:16:13,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2020-10-26 04:16:13,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-26 04:16:13,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:16:13,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:16:13,719 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-26 04:16:13,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-26 04:16:13,719 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 295#L18 assume !(main_~i~0 <= 0); 287#L20 call main_#t~ret3 := rec(main_~i~0);< 286#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 291#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 292#L5 assume !(0 == ~a); 290#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 293#L5 assume 0 == ~a;#res := 0; 304#recFINAL assume true; 301#recEXIT >#34#return; 302#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 296#L10-2 assume !(~rescopy~0 > 0); 297#L10-3 #res := 1 + ~res~0; 300#recFINAL assume true; 303#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 299#L10-2 [2020-10-26 04:16:13,720 INFO L796 eck$LassoCheckResult]: Loop: 299#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 299#L10-2 [2020-10-26 04:16:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,720 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2020-10-26 04:16:13,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114265210] [2020-10-26 04:16:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,773 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,774 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2020-10-26 04:16:13,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963108311] [2020-10-26 04:16:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,780 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:13,780 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2020-10-26 04:16:13,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:16:13,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299276993] [2020-10-26 04:16:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:16:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:16:13,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:16:13,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:16:13,816 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:13,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:13,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:13,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:13,816 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:16:13,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:13,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:13,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2020-10-26 04:16:13,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:13,817 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:13,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,855 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:13,855 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-26 04:16:13,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:16:13,858 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:13,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:16:13,896 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,934 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:16:13,935 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:16:13,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:16:13,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:16:13,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:16:13,936 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:16:13,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:16:13,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:16:13,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2020-10-26 04:16:13,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:16:13,936 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:16:13,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:16:13,971 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:16:13,971 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:16:13,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:16:13,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:16:13,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:16:13,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:16:13,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:16:13,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:16:13,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:16:13,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:13,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:16:13,988 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:16:13,988 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:16:13,991 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:16:13,991 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:16:13,991 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:16:13,992 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:16:14,024 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:16:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,146 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 04:16:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,156 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:14,158 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 04:16:14,158 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:16:14,203 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-10-26 04:16:14,203 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 04:16:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:16:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:16:14,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-10-26 04:16:14,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:14,204 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:16:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 04:16:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,299 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:14,300 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 04:16:14,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:16:14,344 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-10-26 04:16:14,344 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 04:16:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:16:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:16:14,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-10-26 04:16:14,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:14,346 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:16:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:16:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,434 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 04:16:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:16:14,443 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:16:14,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:16:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:16:14,444 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 04:16:14,444 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:16:14,499 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2020-10-26 04:16:14,500 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 04:16:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:16:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-10-26 04:16:14,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2020-10-26 04:16:14,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:14,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2020-10-26 04:16:14,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:14,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2020-10-26 04:16:14,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:16:14,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2020-10-26 04:16:14,504 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:16:14,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-10-26 04:16:14,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:16:14,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:16:14,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:16:14,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:16:14,505 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:14,505 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:14,505 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:16:14,505 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:16:14,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:16:14,505 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:16:14,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:16:14,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:16:14 BoogieIcfgContainer [2020-10-26 04:16:14,513 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:16:14,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:16:14,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:16:14,514 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:16:14,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:16:09" (3/4) ... [2020-10-26 04:16:14,518 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:16:14,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:16:14,520 INFO L168 Benchmark]: Toolchain (without parser) took 5366.55 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 25.7 MB in the beginning and 53.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:14,520 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory is still 31.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:14,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.58 ms. Allocated memory is still 48.2 MB. Free memory was 25.1 MB in the beginning and 30.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:14,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.01 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 28.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:14,522 INFO L168 Benchmark]: Boogie Preprocessor took 21.80 ms. Allocated memory is still 48.2 MB. Free memory was 28.6 MB in the beginning and 27.8 MB in the end (delta: 862.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:14,523 INFO L168 Benchmark]: RCFGBuilder took 289.25 ms. Allocated memory is still 48.2 MB. Free memory was 27.8 MB in the beginning and 32.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:14,524 INFO L168 Benchmark]: BuchiAutomizer took 4724.58 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 32.0 MB in the beginning and 53.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:16:14,524 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 86.0 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:16:14,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory is still 31.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.58 ms. Allocated memory is still 48.2 MB. Free memory was 25.1 MB in the beginning and 30.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.01 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 28.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.80 ms. Allocated memory is still 48.2 MB. Free memory was 28.6 MB in the beginning and 27.8 MB in the end (delta: 862.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.25 ms. Allocated memory is still 48.2 MB. Free memory was 27.8 MB in the beginning and 32.2 MB in the end (delta: -4.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4724.58 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 32.0 MB in the beginning and 53.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.62 ms. Allocated memory is still 86.0 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 3.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf98 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf120 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 104ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...