./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 390ee452fa25e3a561f4f5458b90e15735049b3f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 02:07:45,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:07:45,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:07:45,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:07:45,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:07:45,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:07:45,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:07:45,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:07:45,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:07:45,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:07:45,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:07:45,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:07:45,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:07:45,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:07:45,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:07:45,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:07:45,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:07:45,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:07:45,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:07:45,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:07:45,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:07:45,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:07:45,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:07:45,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:07:45,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:07:45,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:07:45,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:07:45,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:07:45,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:07:45,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:07:45,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:07:45,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:07:45,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:07:45,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:07:45,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:07:45,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:07:45,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:07:45,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:07:45,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:07:45,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:07:45,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:07:45,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:07:45,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:07:45,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:07:45,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:07:45,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:07:45,481 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:07:45,481 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:07:45,481 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:07:45,481 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:07:45,482 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:07:45,482 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:07:45,483 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:07:45,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:07:45,484 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:07:45,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:07:45,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:07:45,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:07:45,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:07:45,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:07:45,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:07:45,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:07:45,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:07:45,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:07:45,488 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:07:45,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:07:45,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:07:45,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:07:45,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:07:45,489 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:07:45,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:07:45,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:07:45,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:07:45,491 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:07:45,493 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:07:45,493 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 390ee452fa25e3a561f4f5458b90e15735049b3f [2020-07-29 02:07:45,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:07:45,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:07:45,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:07:45,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:07:45,827 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:07:45,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/down.i [2020-07-29 02:07:45,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d25f4ae1/0c49b9089dd349aa8f7b207ffeffb6d3/FLAG8ac90d225 [2020-07-29 02:07:46,259 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:07:46,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i [2020-07-29 02:07:46,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d25f4ae1/0c49b9089dd349aa8f7b207ffeffb6d3/FLAG8ac90d225 [2020-07-29 02:07:46,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d25f4ae1/0c49b9089dd349aa8f7b207ffeffb6d3 [2020-07-29 02:07:46,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:07:46,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:07:46,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:07:46,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:07:46,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:07:46,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f37a3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46, skipping insertion in model container [2020-07-29 02:07:46,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:07:46,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:07:46,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:07:46,850 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:07:46,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:07:46,882 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:07:46,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46 WrapperNode [2020-07-29 02:07:46,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:07:46,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:07:46,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:07:46,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:07:46,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:07:46,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:07:46,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:07:46,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:07:46,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (1/1) ... [2020-07-29 02:07:46,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:07:46,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:07:46,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:07:46,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:07:46,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (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 [2020-07-29 02:07:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:07:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:07:47,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:07:47,351 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-29 02:07:47,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:07:47 BoogieIcfgContainer [2020-07-29 02:07:47,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:07:47,368 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:07:47,370 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:07:47,377 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:07:47,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:07:47,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:07:46" (1/3) ... [2020-07-29 02:07:47,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795b3c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:07:47, skipping insertion in model container [2020-07-29 02:07:47,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:07:47,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:07:46" (2/3) ... [2020-07-29 02:07:47,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@795b3c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:07:47, skipping insertion in model container [2020-07-29 02:07:47,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:07:47,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:07:47" (3/3) ... [2020-07-29 02:07:47,386 INFO L371 chiAutomizerObserver]: Analyzing ICFG down.i [2020-07-29 02:07:47,434 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:07:47,434 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:07:47,435 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:07:47,435 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:07:47,435 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:07:47,435 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:07:47,435 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:07:47,435 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:07:47,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-07-29 02:07:47,467 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-07-29 02:07:47,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:47,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:47,472 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:07:47,472 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-29 02:07:47,472 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:07:47,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-07-29 02:07:47,475 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-07-29 02:07:47,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:47,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:47,476 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-29 02:07:47,476 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-29 02:07:47,482 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 7#L18-2true [2020-07-29 02:07:47,482 INFO L796 eck$LassoCheckResult]: Loop: 7#L18-2true assume !!(main_~i~0 < main_~n~0);main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1;main_#t~post2 := main_~k~0;main_~k~0 := 1 + main_#t~post2;havoc main_#t~post2; 7#L18-2true [2020-07-29 02:07:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:47,487 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-07-29 02:07:47,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:47,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770577513] [2020-07-29 02:07:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,590 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:07:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-07-29 02:07:47,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:47,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499452731] [2020-07-29 02:07:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,610 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:07:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:47,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-07-29 02:07:47,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:47,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447458803] [2020-07-29 02:07:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:47,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:47,629 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:07:47,707 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:07:47,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:07:47,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:07:47,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:07:47,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 02:07:47,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:47,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:07:47,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:07:47,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2020-07-29 02:07:47,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:07:47,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:07:47,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:47,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:47,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:47,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:47,912 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:07:47,913 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 [2020-07-29 02:07:47,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:07:47,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 02:07:47,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 02:07:47,934 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=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 [2020-07-29 02:07:47,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:07:47,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 02:07:47,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 02:07:47,975 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1=0} Honda state: {ULTIMATE.start_main_#t~post1=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) [2020-07-29 02:07:48,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:07:48,021 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:07:48,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 02:07:48,073 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:48,215 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 02:07:48,217 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:07:48,217 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:07:48,217 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:07:48,217 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:07:48,217 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 02:07:48,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:48,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:07:48,218 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:07:48,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2020-07-29 02:07:48,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:07:48,219 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:07:48,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:48,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:48,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:48,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:48,358 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:07:48,364 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:48,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 02:07:48,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:07:48,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:07:48,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:07:48,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:07:48,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:07:48,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:07:48,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 02:07:48,396 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) [2020-07-29 02:07:48,432 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 [2020-07-29 02:07:48,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:07:48,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:07:48,435 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:07:48,435 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:07:48,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:07:48,438 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:07:48,438 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 [2020-07-29 02:07:48,441 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:48,473 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 [2020-07-29 02:07:48,475 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:07:48,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:07:48,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:07:48,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:07:48,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:07:48,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:07:48,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-29 02:07:48,494 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 02:07:48,507 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-29 02:07:48,507 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:07:48,520 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 02:07:48,521 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 02:07:48,521 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 02:07:48,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:48,564 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 02:07:48,571 INFO L393 LassoCheck]: Loop: "assume !!(main_~i~0 < main_~n~0);main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1;main_#t~post2 := main_~k~0;main_~k~0 := 1 + main_#t~post2;havoc main_#t~post2;" [2020-07-29 02:07:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:48,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 02:07:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:48,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:07:48,640 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {21#unseeded} is VALID [2020-07-29 02:07:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:48,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-29 02:07:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:48,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:07:48,655 INFO L280 TraceCheckUtils]: 0: Hoare triple {24#(>= oldRank0 (+ ULTIMATE.start_main_~n~0 (* (- 1) ULTIMATE.start_main_~i~0)))} assume !!(main_~i~0 < main_~n~0);main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1;main_#t~post2 := main_~k~0;main_~k~0 := 1 + main_#t~post2;havoc main_#t~post2; {34#(or (and (> oldRank0 (+ ULTIMATE.start_main_~n~0 (* (- 1) ULTIMATE.start_main_~i~0))) (>= oldRank0 0)) unseeded)} is VALID [2020-07-29 02:07:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:07:48,666 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-29 02:07:48,679 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:07:48,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,692 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-29 02:07:48,694 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 2 states. [2020-07-29 02:07:48,786 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 2 states. Result 30 states and 40 transitions. Complement of second has 5 states. [2020-07-29 02:07:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-29 02:07:48,787 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:07:48,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-07-29 02:07:48,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-07-29 02:07:48,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:48,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:48,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-29 02:07:48,800 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-29 02:07:48,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:48,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:48,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 40 transitions. [2020-07-29 02:07:48,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:07:48,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:48,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:48,808 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 11 states. [2020-07-29 02:07:48,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-07-29 02:07:48,816 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 5 examples of accepted words. [2020-07-29 02:07:48,817 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 2 states. [2020-07-29 02:07:48,825 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-29 02:07:48,826 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 2 examples of accepted words. [2020-07-29 02:07:48,826 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 30 states and 40 transitions. cyclomatic complexity: 14 [2020-07-29 02:07:48,827 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 02:07:48,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 30 letters. Loop has 30 letters. [2020-07-29 02:07:48,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 30 letters. Loop has 30 letters. [2020-07-29 02:07:48,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 30 letters. Loop has 30 letters. [2020-07-29 02:07:48,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 11 letters. Loop has 11 letters. [2020-07-29 02:07:48,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 11 letters. Loop has 11 letters. [2020-07-29 02:07:48,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 11 letters. Loop has 11 letters. [2020-07-29 02:07:48,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:48,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:48,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:48,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 5 letters. Loop has 4 letters. [2020-07-29 02:07:48,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 5 letters. Loop has 4 letters. [2020-07-29 02:07:48,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 5 letters. Loop has 4 letters. [2020-07-29 02:07:48,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:07:48,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:07:48,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:07:48,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:48,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:48,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 30 states and 40 transitions. cyclomatic complexity: 14 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:48,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,854 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:07:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-29 02:07:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2020-07-29 02:07:48,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 1 letters. Loop has 1 letters. [2020-07-29 02:07:48,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-29 02:07:48,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-29 02:07:48,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:48,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. cyclomatic complexity: 14 [2020-07-29 02:07:48,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:07:48,867 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 7 states and 9 transitions. [2020-07-29 02:07:48,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-29 02:07:48,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-29 02:07:48,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-07-29 02:07:48,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:07:48,870 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-29 02:07:48,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-07-29 02:07:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-29 02:07:48,892 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:07:48,893 INFO L82 GeneralOperation]: Start isEquivalent. First operand 7 states and 9 transitions. Second operand 7 states. [2020-07-29 02:07:48,893 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states and 9 transitions. Second operand 7 states. [2020-07-29 02:07:48,896 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 7 states. [2020-07-29 02:07:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:07:48,900 INFO L93 Difference]: Finished difference Result 7 states and 9 transitions. [2020-07-29 02:07:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2020-07-29 02:07:48,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:07:48,901 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:07:48,901 INFO L74 IsIncluded]: Start isIncluded. First operand 7 states. Second operand 7 states and 9 transitions. [2020-07-29 02:07:48,902 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 7 states and 9 transitions. [2020-07-29 02:07:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:07:48,903 INFO L93 Difference]: Finished difference Result 7 states and 9 transitions. [2020-07-29 02:07:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 9 transitions. [2020-07-29 02:07:48,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:07:48,903 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:07:48,903 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:07:48,904 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:07:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-29 02:07:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-07-29 02:07:48,906 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-29 02:07:48,906 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-29 02:07:48,906 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:07:48,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-07-29 02:07:48,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:07:48,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:48,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:48,907 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:07:48,907 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 02:07:48,908 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 80#L18-2 assume !(main_~i~0 < main_~n~0); 76#L18-3 main_~j~0 := main_~n~0; 77#L23-2 [2020-07-29 02:07:48,908 INFO L796 eck$LassoCheckResult]: Loop: 77#L23-2 assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 79#L7 assume !(0 == __VERIFIER_assert_~cond); 78#L7-2 main_#t~post3 := main_~j~0;main_~j~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~k~0;main_~k~0 := main_#t~post4 - 1;havoc main_#t~post4; 77#L23-2 [2020-07-29 02:07:48,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 31014, now seen corresponding path program 1 times [2020-07-29 02:07:48,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:48,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798036923] [2020-07-29 02:07:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:48,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:48,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:48,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:07:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash 52857, now seen corresponding path program 1 times [2020-07-29 02:07:48,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:48,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481978332] [2020-07-29 02:07:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:48,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:07:48,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:07:48,936 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:07:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:48,936 INFO L82 PathProgramCache]: Analyzing trace with hash 923961140, now seen corresponding path program 1 times [2020-07-29 02:07:48,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:07:48,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802444518] [2020-07-29 02:07:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:07:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,024 INFO L280 TraceCheckUtils]: 0: Hoare triple {104#true} havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {106#(<= ULTIMATE.start_main_~i~0 0)} is VALID [2020-07-29 02:07:49,026 INFO L280 TraceCheckUtils]: 1: Hoare triple {106#(<= ULTIMATE.start_main_~i~0 0)} assume !(main_~i~0 < main_~n~0); {107#(<= ULTIMATE.start_main_~n~0 0)} is VALID [2020-07-29 02:07:49,027 INFO L280 TraceCheckUtils]: 2: Hoare triple {107#(<= ULTIMATE.start_main_~n~0 0)} main_~j~0 := main_~n~0; {108#(<= ULTIMATE.start_main_~j~0 0)} is VALID [2020-07-29 02:07:49,028 INFO L280 TraceCheckUtils]: 3: Hoare triple {108#(<= ULTIMATE.start_main_~j~0 0)} assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {105#false} is VALID [2020-07-29 02:07:49,028 INFO L280 TraceCheckUtils]: 4: Hoare triple {105#false} assume !(0 == __VERIFIER_assert_~cond); {105#false} is VALID [2020-07-29 02:07:49,028 INFO L280 TraceCheckUtils]: 5: Hoare triple {105#false} main_#t~post3 := main_~j~0;main_~j~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~k~0;main_~k~0 := main_#t~post4 - 1;havoc main_#t~post4; {105#false} is VALID [2020-07-29 02:07:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:07:49,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802444518] [2020-07-29 02:07:49,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:07:49,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-29 02:07:49,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115073762] [2020-07-29 02:07:49,125 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:07:49,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:07:49,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:07:49,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:07:49,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-29 02:07:49,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:49,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:07:49,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:07:49,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2020-07-29 02:07:49,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:07:49,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:07:49,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:07:49,324 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 [2020-07-29 02:07:49,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:07:49,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 02:07:49,342 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-29 02:07:49,342 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} 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) [2020-07-29 02:07:49,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-29 02:07:49,379 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 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 [2020-07-29 02:07:49,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-29 02:07:49,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-29 02:07:49,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-29 02:07:49,454 INFO L210 LassoAnalysis]: Preferences: [2020-07-29 02:07:49,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-29 02:07:49,455 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-29 02:07:49,455 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-29 02:07:49,455 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-29 02:07:49,455 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:49,455 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-29 02:07:49,455 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-29 02:07:49,455 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2020-07-29 02:07:49,455 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-29 02:07:49,455 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-29 02:07:49,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-29 02:07:49,629 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-29 02:07:49,629 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:07:49,641 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 [2020-07-29 02:07:49,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:07:49,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:07:49,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:07:49,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:07:49,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:07:49,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:07:49,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:49,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:07:49,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-29 02:07:49,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-29 02:07:49,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-29 02:07:49,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-29 02:07:49,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-29 02:07:49,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-29 02:07:49,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-29 02:07:49,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:49,701 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-29 02:07:49,704 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-29 02:07:49,705 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-29 02:07:49,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-29 02:07:49,716 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-29 02:07:49,716 INFO L510 LassoAnalysis]: Proved termination. [2020-07-29 02:07:49,716 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:07:49,756 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-29 02:07:49,758 INFO L393 LassoCheck]: Loop: "assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond;" "assume !(0 == __VERIFIER_assert_~cond);" "main_#t~post3 := main_~j~0;main_~j~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~k~0;main_~k~0 := main_#t~post4 - 1;havoc main_#t~post4;" [2020-07-29 02:07:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:07:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-29 02:07:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:07:49,786 INFO L280 TraceCheckUtils]: 0: Hoare triple {109#unseeded} havoc main_#res;havoc main_#t~nondet0, main_#t~post1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; {109#unseeded} is VALID [2020-07-29 02:07:49,786 INFO L280 TraceCheckUtils]: 1: Hoare triple {109#unseeded} assume !(main_~i~0 < main_~n~0); {109#unseeded} is VALID [2020-07-29 02:07:49,787 INFO L280 TraceCheckUtils]: 2: Hoare triple {109#unseeded} main_~j~0 := main_~n~0; {109#unseeded} is VALID [2020-07-29 02:07:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-29 02:07:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:07:49,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-29 02:07:49,870 INFO L342 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-29 02:07:49,871 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-29 02:07:49,887 INFO L280 TraceCheckUtils]: 0: Hoare triple {112#(>= oldRank0 ULTIMATE.start_main_~k~0)} assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {133#(and (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~k~0 0)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< 0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 oldRank0))} is VALID [2020-07-29 02:07:49,888 INFO L280 TraceCheckUtils]: 1: Hoare triple {133#(and (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~k~0 0)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< 0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 oldRank0))} assume !(0 == __VERIFIER_assert_~cond); {137#(and (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 oldRank0))} is VALID [2020-07-29 02:07:49,889 INFO L280 TraceCheckUtils]: 2: Hoare triple {137#(and (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 oldRank0))} main_#t~post3 := main_~j~0;main_~j~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~k~0;main_~k~0 := main_#t~post4 - 1;havoc main_#t~post4; {122#(or (and (> oldRank0 ULTIMATE.start_main_~k~0) (>= oldRank0 0)) unseeded)} is VALID [2020-07-29 02:07:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:07:49,890 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 02:07:49,900 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:07:49,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,900 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 [2020-07-29 02:07:49,901 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-07-29 02:07:49,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 10 states and 13 transitions. Complement of second has 6 states. [2020-07-29 02:07:49,964 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 [2020-07-29 02:07:49,964 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:07:49,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. cyclomatic complexity: 4 [2020-07-29 02:07:49,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:49,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:49,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-29 02:07:49,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:07:49,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:07:49,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:07:49,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-07-29 02:07:49,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:07:49,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:07:49,968 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 7 states and 9 transitions. cyclomatic complexity: 4 [2020-07-29 02:07:49,969 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2020-07-29 02:07:49,969 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 4 states. [2020-07-29 02:07:49,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-29 02:07:49,970 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2020-07-29 02:07:49,970 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 02:07:49,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 02:07:49,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:07:49,971 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2020-07-29 02:07:49,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:07:49,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:07:49,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 10 letters. Loop has 10 letters. [2020-07-29 02:07:49,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 7 letters. Loop has 7 letters. [2020-07-29 02:07:49,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 7 letters. Loop has 7 letters. [2020-07-29 02:07:49,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 7 letters. Loop has 7 letters. [2020-07-29 02:07:49,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:49,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:49,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 4 letters. [2020-07-29 02:07:49,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:49,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:49,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 5 letters. Loop has 3 letters. [2020-07-29 02:07:49,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:49,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:49,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 4 letters. Loop has 3 letters. [2020-07-29 02:07:49,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 9 transitions. cyclomatic complexity: 4 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states. Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 13 transitions. cyclomatic complexity: 5 Stem has 1 letters. Loop has 3 letters. [2020-07-29 02:07:49,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,984 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2020-07-29 02:07:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 02:07:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-07-29 02:07:49,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2020-07-29 02:07:49,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-29 02:07:49,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2020-07-29 02:07:49,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-29 02:07:49,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. cyclomatic complexity: 5 [2020-07-29 02:07:49,988 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:07:49,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-07-29 02:07:49,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:07:49,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:07:49,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:07:49,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:07:49,990 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:07:49,990 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:07:49,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:07:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 02:07:49,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 02:07:49,995 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-07-29 02:07:49,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:07:49,996 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-29 02:07:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-29 02:07:49,996 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 02:07:50,006 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:07:50,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-29 02:07:50,007 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:07:50,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-29 02:07:50,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-29 02:07:50,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-29 02:07:50,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-29 02:07:50,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:07:50,008 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:07:50,008 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:07:50,009 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-29 02:07:50,009 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-29 02:07:50,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-29 02:07:50,009 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-29 02:07:50,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-29 02:07:50,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:07:50 BoogieIcfgContainer [2020-07-29 02:07:50,019 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:07:50,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:07:50,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:07:50,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:07:50,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:07:47" (3/4) ... [2020-07-29 02:07:50,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-29 02:07:50,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:07:50,029 INFO L168 Benchmark]: Toolchain (without parser) took 3374.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 960.2 MB in the beginning and 778.0 MB in the end (delta: 182.3 MB). Peak memory consumption was 282.4 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,030 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:07:50,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.18 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,033 INFO L168 Benchmark]: Boogie Preprocessor took 21.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,034 INFO L168 Benchmark]: RCFGBuilder took 370.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,035 INFO L168 Benchmark]: BuchiAutomizer took 2651.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 778.0 MB in the end (delta: 290.7 MB). Peak memory consumption was 290.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:07:50,035 INFO L168 Benchmark]: Witness Printer took 5.38 ms. Allocated memory is still 1.1 GB. Free memory is still 778.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:07:50,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 226.18 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -146.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 370.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2651.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 778.0 MB in the end (delta: 290.7 MB). Peak memory consumption was 290.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.38 ms. Allocated memory is still 1.1 GB. Free memory is still 778.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k 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 2.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 16 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...