./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 82bd2b65619821bf052931b3532da39241349d4f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:30:35,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:30:35,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:30:35,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:30:35,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:30:35,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:30:35,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:30:35,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:30:35,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:30:35,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:30:35,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:30:35,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:30:35,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:30:35,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:30:35,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:30:35,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:30:35,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:30:35,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:30:35,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:30:35,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:30:35,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:30:35,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:30:35,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:30:35,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:30:35,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:30:35,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:30:35,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:30:35,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:30:35,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:30:35,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:30:35,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:30:35,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:30:35,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:30:35,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:30:35,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:30:35,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:30:35,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:30:35,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:30:35,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:30:35,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:30:35,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:30:35,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:30:35,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:30:35,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:30:35,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:30:35,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:30:35,643 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:30:35,643 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:30:35,643 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:30:35,643 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:30:35,644 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:30:35,644 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:30:35,644 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:30:35,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:30:35,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:30:35,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:30:35,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:30:35,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:30:35,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:30:35,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:30:35,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:30:35,646 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:30:35,646 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:30:35,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:30:35,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:30:35,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:30:35,647 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:30:35,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:30:35,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:30:35,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:30:35,648 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:30:35,649 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:30:35,649 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bd2b65619821bf052931b3532da39241349d4f [2019-11-28 20:30:35,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:30:35,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:30:35,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:30:35,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:30:35,986 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:30:35,987 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-11-28 20:30:36,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434d35fca/70d62508ac96459cac42fbca64a59a33/FLAGa2e7e74d6 [2019-11-28 20:30:36,518 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:30:36,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-11-28 20:30:36,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434d35fca/70d62508ac96459cac42fbca64a59a33/FLAGa2e7e74d6 [2019-11-28 20:30:36,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/434d35fca/70d62508ac96459cac42fbca64a59a33 [2019-11-28 20:30:36,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:30:36,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:30:36,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:36,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:30:36,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:30:36,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:36" (1/1) ... [2019-11-28 20:30:36,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c5318a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:36, skipping insertion in model container [2019-11-28 20:30:36,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:30:36" (1/1) ... [2019-11-28 20:30:36,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:30:36,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:30:37,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:37,135 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:30:37,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:30:37,169 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:30:37,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37 WrapperNode [2019-11-28 20:30:37,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:30:37,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:37,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:30:37,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:30:37,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:30:37,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:30:37,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:30:37,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:30:37,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (1/1) ... [2019-11-28 20:30:37,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:30:37,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:30:37,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:30:37,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:30:37,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (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 [2019-11-28 20:30:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-11-28 20:30:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-11-28 20:30:37,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:30:37,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:30:37,494 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:30:37,495 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:30:37,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:37 BoogieIcfgContainer [2019-11-28 20:30:37,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:30:37,497 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:30:37,497 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:30:37,501 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:30:37,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:37,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:30:36" (1/3) ... [2019-11-28 20:30:37,504 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fe7a198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:37, skipping insertion in model container [2019-11-28 20:30:37,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:37,504 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:30:37" (2/3) ... [2019-11-28 20:30:37,505 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fe7a198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:30:37, skipping insertion in model container [2019-11-28 20:30:37,505 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:30:37,505 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:37" (3/3) ... [2019-11-28 20:30:37,507 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2019-11-28 20:30:37,557 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:30:37,558 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:30:37,558 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:30:37,558 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:30:37,559 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:30:37,559 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:30:37,559 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:30:37,559 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:30:37,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-28 20:30:37,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-28 20:30:37,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:37,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:37,632 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:30:37,632 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:37,633 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:30:37,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-28 20:30:37,639 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-28 20:30:37,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:37,640 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:37,640 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:30:37,642 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:30:37,661 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2019-11-28 20:30:37,663 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2019-11-28 20:30:37,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2019-11-28 20:30:37,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:37,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212070637] [2019-11-28 20:30:37,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,795 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2019-11-28 20:30:37,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:37,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558578921] [2019-11-28 20:30:37,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:37,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2019-11-28 20:30:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:37,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332064104] [2019-11-28 20:30:37,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:37,833 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:37,932 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:37,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:37,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:37,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:37,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:37,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:37,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:37,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:37,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2019-11-28 20:30:37,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:37,938 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:37,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:37,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:37,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:38,122 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) [2019-11-28 20:30:38,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,134 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,144 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,144 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe 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) [2019-11-28 20:30:38,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,160 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,166 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,183 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,184 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,203 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 [2019-11-28 20:30:38,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,236 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:38,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,278 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-1} Honda state: {rec_#in~a=-1} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 0, 9] Nus: [0, 0] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-11-28 20:30:38,337 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:38,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:38,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:38,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:38,338 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:38,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:38,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:38,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-11-28 20:30:38,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:38,340 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:38,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,473 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:38,474 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) [2019-11-28 20:30:38,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,491 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,497 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,513 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 [2019-11-28 20:30:38,517 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,517 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,533 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,554 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,558 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,575 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,580 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,596 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,623 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,623 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,644 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,677 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,681 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,681 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,697 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,701 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:30:38,714 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1=0} Honda state: {ULTIMATE.start_main_~res~1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:38,726 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:38,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:30:38,770 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:38,772 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:38,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:38,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:38,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:38,773 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:38,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:38,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:38,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-11-28 20:30:38,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:38,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:38,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:38,948 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:38,954 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,965 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 [2019-11-28 20:30:38,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:38,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:38,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:38,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:38,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:38,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:38,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:38,985 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 [2019-11-28 20:30:38,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:38,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:38,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:38,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:38,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:38,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:38,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:38,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,002 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 [2019-11-28 20:30:39,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,011 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,020 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 [2019-11-28 20:30:39,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,041 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:30:39,049 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,057 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 [2019-11-28 20:30:39,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,061 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,061 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,074 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:30:39,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,089 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 [2019-11-28 20:30:39,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,099 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,107 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 [2019-11-28 20:30:39,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,116 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,125 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 [2019-11-28 20:30:39,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,133 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,141 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 [2019-11-28 20:30:39,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:39,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:39,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:39,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:39,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,148 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,155 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 [2019-11-28 20:30:39,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:39,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:39,158 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 20:30:39,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,186 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-28 20:30:39,186 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-28 20:30:39,216 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:39,295 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-28 20:30:39,295 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:39,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,347 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-28 20:30:39,347 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:39,348 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2019-11-28 20:30:39,368 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 20:30:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:39,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:30:39,459 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:39,506 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:30:39,507 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:39,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-28 20:30:39,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2019-11-28 20:30:39,720 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2019-11-28 20:30:39,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 20:30:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-28 20:30:39,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 20:30:39,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:39,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 20:30:39,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:39,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 20:30:39,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:39,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2019-11-28 20:30:39,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:30:39,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2019-11-28 20:30:39,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 20:30:39,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 20:30:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2019-11-28 20:30:39,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:39,748 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2019-11-28 20:30:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2019-11-28 20:30:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-11-28 20:30:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:30:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-28 20:30:39,782 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-28 20:30:39,782 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-28 20:30:39,782 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:30:39,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-11-28 20:30:39,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:30:39,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:39,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:39,784 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:30:39,784 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:30:39,785 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2019-11-28 20:30:39,785 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2019-11-28 20:30:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2019-11-28 20:30:39,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:39,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69776875] [2019-11-28 20:30:39,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:39,815 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-11-28 20:30:39,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:39,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483779100] [2019-11-28 20:30:39,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:39,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:39,831 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2019-11-28 20:30:39,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:39,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582670471] [2019-11-28 20:30:39,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 20:30:39,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582670471] [2019-11-28 20:30:39,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:30:39,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:30:39,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93302648] [2019-11-28 20:30:39,997 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:39,997 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:39,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:39,998 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:39,998 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:39,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:39,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:39,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:39,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-11-28 20:30:39,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:39,998 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:39,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,029 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,029 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:40,035 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:40,050 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,060 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:40,062 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:40,062 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:40,063 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:40,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:40,063 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:40,063 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:40,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:40,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-11-28 20:30:40,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:40,064 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:40,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,101 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,109 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 [2019-11-28 20:30:40,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:40,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:40,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,116 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,126 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 [2019-11-28 20:30:40,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:40,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:40,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:40,141 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:40,141 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:40,155 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:40,155 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:40,156 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-28 20:30:40,159 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,206 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,209 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,240 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,240 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:40,241 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:30:40,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:30:40,290 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2019-11-28 20:30:40,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:30:40,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-11-28 20:30:40,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2019-11-28 20:30:40,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2019-11-28 20:30:40,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-28 20:30:40,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-11-28 20:30:40,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:30:40,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2019-11-28 20:30:40,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-28 20:30:40,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-28 20:30:40,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-11-28 20:30:40,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:40,304 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-28 20:30:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-11-28 20:30:40,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-28 20:30:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 20:30:40,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2019-11-28 20:30:40,316 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-28 20:30:40,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:30:40,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:30:40,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:30:40,322 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2019-11-28 20:30:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:30:40,346 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-28 20:30:40,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:30:40,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2019-11-28 20:30:40,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:30:40,349 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2019-11-28 20:30:40,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-28 20:30:40,350 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-28 20:30:40,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2019-11-28 20:30:40,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:30:40,351 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-28 20:30:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2019-11-28 20:30:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-28 20:30:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 20:30:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-28 20:30:40,354 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-28 20:30:40,355 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-28 20:30:40,355 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:30:40,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2019-11-28 20:30:40,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:30:40,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:30:40,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:30:40,357 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 20:30:40,357 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:30:40,357 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 295#L18 assume !(main_~i~0 <= 0); 287#L20 call main_#t~ret3 := rec(main_~i~0);< 286#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 291#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 292#L5 assume !(0 == ~a); 290#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 293#L5 assume 0 == ~a;#res := 0; 304#recFINAL assume true; 301#recEXIT >#34#return; 302#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 296#L10-2 assume !(~rescopy~0 > 0); 297#L10-3 #res := 1 + ~res~0; 300#recFINAL assume true; 303#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 299#L10-2 [2019-11-28 20:30:40,358 INFO L796 eck$LassoCheckResult]: Loop: 299#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 299#L10-2 [2019-11-28 20:30:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2019-11-28 20:30:40,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634088936] [2019-11-28 20:30:40,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-11-28 20:30:40,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398421813] [2019-11-28 20:30:40,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,388 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2019-11-28 20:30:40,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:30:40,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947721876] [2019-11-28 20:30:40,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:30:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:30:40,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:30:40,437 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:40,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:40,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:40,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:40,438 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:30:40,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:40,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:40,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-11-28 20:30:40,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:40,440 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:40,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,491 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,491 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:30:40,501 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:30:40,517 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,524 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:30:40,526 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:30:40,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:30:40,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:30:40,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:30:40,526 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:30:40,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:30:40,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:30:40,527 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-11-28 20:30:40,527 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:30:40,527 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:30:40,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:30:40,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:30:40,596 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,605 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 [2019-11-28 20:30:40,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:30:40,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:30:40,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:30:40,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:30:40,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:30:40,608 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:30:40,608 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,611 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:30:40,614 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:30:40,614 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:30:40,619 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:30:40,619 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:30:40,619 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:30:40,619 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-28 20:30:40,621 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:30:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,700 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 20:30:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,756 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,757 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:40,758 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:30:40,758 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:30:40,809 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2019-11-28 20:30:40,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:30:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-28 20:30:40,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-28 20:30:40,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,813 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:30:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,851 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,853 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 20:30:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,882 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:40,883 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:30:40,884 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:30:40,932 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2019-11-28 20:30:40,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:30:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-28 20:30:40,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-28 20:30:40,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:40,934 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:30:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:30:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,972 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,974 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 20:30:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:30:40,999 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:30:40,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:30:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:30:41,000 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-28 20:30:41,000 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:30:41,046 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2019-11-28 20:30:41,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:30:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:30:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-28 20:30:41,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-28 20:30:41,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2019-11-28 20:30:41,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2019-11-28 20:30:41,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:30:41,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2019-11-28 20:30:41,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:30:41,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-28 20:30:41,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:30:41,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:30:41,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:30:41,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:30:41,052 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:30:41,052 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:30:41,052 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:30:41,052 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:30:41,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:30:41,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:30:41,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:30:41,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:30:41 BoogieIcfgContainer [2019-11-28 20:30:41,060 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:30:41,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:30:41,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:30:41,060 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:30:41,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:30:37" (3/4) ... [2019-11-28 20:30:41,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:30:41,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:30:41,080 INFO L168 Benchmark]: Toolchain (without parser) took 4154.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -50.6 MB). Peak memory consumption was 162.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,080 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:30:41,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.35 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,085 INFO L168 Benchmark]: Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,086 INFO L168 Benchmark]: RCFGBuilder took 217.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,088 INFO L168 Benchmark]: BuchiAutomizer took 3562.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.5 MB). Peak memory consumption was 177.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:30:41,088 INFO L168 Benchmark]: Witness Printer took 16.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:30:41,099 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.35 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 88.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 217.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3562.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.5 MB). Peak memory consumption was 177.8 MB. Max. memory is 11.5 GB. * Witness Printer took 16.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 196ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...