./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/TerminatorRec02.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/TerminatorRec02.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 8c9656c5ef8dceb7982043d8db455c38d2f23147 .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:15:54,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:15:54,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:15:54,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:15:54,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:15:54,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:15:54,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:15:54,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:15:54,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:15:54,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:15:54,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:15:54,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:15:54,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:15:54,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:15:54,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:15:54,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:15:54,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:15:54,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:15:54,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:15:54,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:15:54,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:15:54,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:15:54,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:15:54,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:15:54,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:15:54,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:15:54,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:15:54,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:15:54,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:15:54,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:15:54,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:15:54,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:15:54,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:15:54,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:15:54,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:15:54,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:15:54,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:15:54,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:15:54,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:15:54,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:15:54,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:15:54,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:15:54,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:15:54,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:15:54,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:15:54,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:15:54,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:15:54,666 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:15:54,666 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:15:54,666 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:15:54,666 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:15:54,667 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:15:54,667 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:15:54,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:15:54,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:15:54,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:15:54,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:15:54,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:15:54,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:15:54,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:15:54,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:15:54,669 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:15:54,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:15:54,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:15:54,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:15:54,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:15:54,670 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:15:54,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:15:54,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:15:54,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:15:54,671 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:15:54,672 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:15:54,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9656c5ef8dceb7982043d8db455c38d2f23147 [2020-10-26 04:15:55,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:15:55,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:15:55,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:15:55,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:15:55,111 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:15:55,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2020-10-26 04:15:55,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee56ab8ec/4e4f34ae0ae5482b8f4c2c79c1a3a17d/FLAG401724c12 [2020-10-26 04:15:55,891 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:15:55,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2020-10-26 04:15:55,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee56ab8ec/4e4f34ae0ae5482b8f4c2c79c1a3a17d/FLAG401724c12 [2020-10-26 04:15:56,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee56ab8ec/4e4f34ae0ae5482b8f4c2c79c1a3a17d [2020-10-26 04:15:56,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:15:56,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:15:56,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:56,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:15:56,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:15:56,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f23710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56, skipping insertion in model container [2020-10-26 04:15:56,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:15:56,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:15:56,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:56,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:15:56,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:15:56,433 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:15:56,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56 WrapperNode [2020-10-26 04:15:56,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:15:56,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:56,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:15:56,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:15:56,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:15:56,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:15:56,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:15:56,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:15:56,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... [2020-10-26 04:15:56,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:15:56,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:15:56,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:15:56,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:15:56,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2020-10-26 04:15:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2020-10-26 04:15:56,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:15:56,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:15:56,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:15:56,806 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 04:15:56,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:56 BoogieIcfgContainer [2020-10-26 04:15:56,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:15:56,809 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:15:56,810 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:15:56,814 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:15:56,815 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:56,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:15:56" (1/3) ... [2020-10-26 04:15:56,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62b685e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:56, skipping insertion in model container [2020-10-26 04:15:56,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:56,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:15:56" (2/3) ... [2020-10-26 04:15:56,818 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62b685e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:15:56, skipping insertion in model container [2020-10-26 04:15:56,818 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:15:56,818 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:56" (3/3) ... [2020-10-26 04:15:56,820 INFO L373 chiAutomizerObserver]: Analyzing ICFG TerminatorRec02.c [2020-10-26 04:15:56,932 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:15:56,935 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:15:56,935 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:15:56,938 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:15:56,938 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:15:56,939 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:15:56,939 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:15:56,939 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:15:56,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-26 04:15:57,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:57,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:57,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:57,062 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:15:57,062 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:15:57,062 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:15:57,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-26 04:15:57,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:15:57,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:15:57,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:15:57,065 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:15:57,065 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:15:57,074 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~x~0, main_~y~1, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L27true assume !(main_~x~0 < 0);main_~y~1 := main_#t~nondet2;havoc main_#t~nondet2; 8#L30true assume !(main_~y~1 < 0);main_~z~0 := main_#t~nondet3;havoc main_#t~nondet3; 12#L33true call main_#t~ret4 := fact(main_~x~0);< 9#factENTRYtrue [2020-10-26 04:15:57,074 INFO L796 eck$LassoCheckResult]: Loop: 9#factENTRYtrue ~x := #in~x; 4#L18true assume ~x > 1; 7#L19true call #t~ret0 := fact(~x - 1);< 9#factENTRYtrue [2020-10-26 04:15:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:57,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 1 times [2020-10-26 04:15:57,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:57,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381878659] [2020-10-26 04:15:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,241 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash 29909, now seen corresponding path program 1 times [2020-10-26 04:15:57,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:57,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624939065] [2020-10-26 04:15:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,300 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:57,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1559568360, now seen corresponding path program 1 times [2020-10-26 04:15:57,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:15:57,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270440231] [2020-10-26 04:15:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:15:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:15:57,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:15:57,348 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:15:57,460 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:57,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:57,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:57,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:57,461 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:15:57,462 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:57,462 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:57,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:57,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2020-10-26 04:15:57,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:57,463 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:57,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,614 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:57,616 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 04:15:57,638 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:57,638 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:15:57,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:15:57,650 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~y~0=0} Honda state: {fact_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:57,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:15:57,700 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:57,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:15:57,767 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 04:15:57,911 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:15:57,915 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:15:57,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:15:57,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:15:57,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:15:57,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:15:57,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:57,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:15:57,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:15:57,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2020-10-26 04:15:57,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:15:57,917 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:15:57,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:57,946 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 04:15:57,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:15:58,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:15:58,051 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:58,059 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:58,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:58,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:58,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:58,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:58,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:58,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:58,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:58,073 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:58,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:58,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:58,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:58,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:58,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:58,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:58,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:58,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:58,134 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:58,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:15:58,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:15:58,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:15:58,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:15:58,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:15:58,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:15:58,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:15:58,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:58,194 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:15:58,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:15:58,209 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:15:58,219 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:15:58,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:15:58,219 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:15:58,220 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~x) = 1*fact_#in~x Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:15:58,259 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:15:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:15:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:58,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:15:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:15:58,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:15:58,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:15:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:15:58,464 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-26 04:15:58,466 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2020-10-26 04:15:58,587 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 32 states and 37 transitions. Complement of second has 12 states. [2020-10-26 04:15:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:15:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:15:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:15:58,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:15:58,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:58,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:15:58,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:58,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-26 04:15:58,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:15:58,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2020-10-26 04:15:58,601 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:58,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-10-26 04:15:58,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:15:58,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:15:58,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:15:58,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:15:58,607 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:58,607 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:58,607 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:15:58,607 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:15:58,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:15:58,608 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:15:58,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:15:58,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:15:58 BoogieIcfgContainer [2020-10-26 04:15:58,615 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:15:58,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:15:58,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:15:58,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:15:58,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:15:56" (3/4) ... [2020-10-26 04:15:58,621 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:15:58,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:15:58,624 INFO L168 Benchmark]: Toolchain (without parser) took 2423.70 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 40.2 MB in the beginning and 41.8 MB in the end (delta: -1.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:58,625 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:58,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.05 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 31.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:58,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 30.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:58,628 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 56.6 MB. Free memory was 30.1 MB in the beginning and 29.3 MB in the end (delta: 857.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:58,629 INFO L168 Benchmark]: RCFGBuilder took 315.87 ms. Allocated memory is still 56.6 MB. Free memory was 29.3 MB in the beginning and 36.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:58,630 INFO L168 Benchmark]: BuchiAutomizer took 1805.90 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 36.3 MB in the beginning and 42.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:15:58,631 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 77.6 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:15:58,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 28.4 MB in the beginning and 28.3 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 229.05 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 31.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 56.6 MB. Free memory was 31.4 MB in the beginning and 30.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 56.6 MB. Free memory was 30.1 MB in the beginning and 29.3 MB in the end (delta: 857.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 315.87 ms. Allocated memory is still 56.6 MB. Free memory was 29.3 MB in the beginning and 36.3 MB in the end (delta: -7.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1805.90 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 36.3 MB in the beginning and 42.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.22 ms. Allocated memory is still 77.6 MB. Free memory is still 41.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 2 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...