./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer --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 0.1.24-6b5699a [2019-11-25 08:48:51,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:51,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:52,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:52,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:52,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:52,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:52,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:52,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:52,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:52,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:52,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:52,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:52,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:52,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:52,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:52,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:52,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:52,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:52,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:52,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:52,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:52,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:52,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:52,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:52,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:52,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:52,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:52,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:52,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:52,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:52,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:52,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:52,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:52,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:52,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:52,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:52,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:52,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:52,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:52,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:52,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:48:52,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:52,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:52,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:52,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:52,102 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:52,102 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:48:52,102 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:48:52,103 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:48:52,103 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:48:52,103 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:48:52,103 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:48:52,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:52,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:48:52,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:52,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:52,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:48:52,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:48:52,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:48:52,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:52,106 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:48:52,106 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:52,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:48:52,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:52,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:52,107 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:48:52,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:52,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:52,107 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:48:52,109 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:48:52,109 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer 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 [2019-11-25 08:48:52,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:52,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:52,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:52,254 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:52,254 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:52,255 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-11-25 08:48:52,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/data/57736fde7/a1e388b6ff2e45e6a3001c567888c07e/FLAG29719f6a8 [2019-11-25 08:48:52,660 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:52,660 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-11-25 08:48:52,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/data/57736fde7/a1e388b6ff2e45e6a3001c567888c07e/FLAG29719f6a8 [2019-11-25 08:48:52,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/data/57736fde7/a1e388b6ff2e45e6a3001c567888c07e [2019-11-25 08:48:52,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:52,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:52,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:52,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:52,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:52,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630d5190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52, skipping insertion in model container [2019-11-25 08:48:52,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:52,705 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:52,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:52,884 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:52,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:52,974 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:52,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52 WrapperNode [2019-11-25 08:48:52,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:52,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:52,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:52,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:52,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:52,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:53,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:53,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:53,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:53,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... [2019-11-25 08:48:53,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:53,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:53,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:53,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:53,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-11-25 08:48:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-11-25 08:48:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:53,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:53,213 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:53,213 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:48:53,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53 BoogieIcfgContainer [2019-11-25 08:48:53,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:53,215 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:48:53,215 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:48:53,218 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:48:53,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:53,219 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:48:52" (1/3) ... [2019-11-25 08:48:53,220 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47dc0182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:48:53, skipping insertion in model container [2019-11-25 08:48:53,220 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:53,220 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:52" (2/3) ... [2019-11-25 08:48:53,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47dc0182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:48:53, skipping insertion in model container [2019-11-25 08:48:53,221 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:53,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53" (3/3) ... [2019-11-25 08:48:53,222 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2019-11-25 08:48:53,267 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:48:53,268 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:48:53,268 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:48:53,268 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:53,268 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:53,268 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:48:53,269 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:53,269 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:48:53,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-25 08:48:53,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-25 08:48:53,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:53,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:53,313 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:48:53,313 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:53,313 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:48:53,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-25 08:48:53,315 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-25 08:48:53,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:53,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:53,316 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:48:53,316 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:53,323 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2019-11-25 08:48:53,329 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2019-11-25 08:48:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2019-11-25 08:48:53,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:53,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978226609] [2019-11-25 08:48:53,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2019-11-25 08:48:53,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:53,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648891980] [2019-11-25 08:48:53,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,464 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:53,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2019-11-25 08:48:53,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:53,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746217026] [2019-11-25 08:48:53,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:53,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:53,573 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:53,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:53,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:53,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:53,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:48:53,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:53,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:53,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:53,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2019-11-25 08:48:53,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:53,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:53,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:53,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:53,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,725 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 [2019-11-25 08:48:53,734 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,735 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:53,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,751 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 [2019-11-25 08:48:53,756 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,756 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:53,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,768 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:53,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,774 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:53,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:53,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,802 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:53,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:53,810 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,810 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:53,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,820 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:53,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:48:53,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:53,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,862 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:53,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:53,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:53,876 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:53,876 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-11-25 08:48:53,900 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:53,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:53,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:53,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:53,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:48:53,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:53,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:53,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:53,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-11-25 08:48:53,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:53,901 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:53,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,055 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:54,056 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,072 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 [2019-11-25 08:48:54,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,077 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,094 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 [2019-11-25 08:48:54,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,098 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,117 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 [2019-11-25 08:48:54,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,122 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,138 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 [2019-11-25 08:48:54,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,142 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,158 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 [2019-11-25 08:48:54,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,162 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,177 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 [2019-11-25 08:48:54,182 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,182 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:54,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:54,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,201 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,209 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,216 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,216 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,232 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,236 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,236 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:54,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,247 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:54,256 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,256 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/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 [2019-11-25 08:48:54,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:54,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:48:54,276 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:54,288 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:48:54,302 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,324 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:48:54,326 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:54,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:54,326 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:54,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:54,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:54,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:54,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:54,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-11-25 08:48:54,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:54,329 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:54,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:54,470 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:54,474 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,480 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 [2019-11-25 08:48:54,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,486 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 [2019-11-25 08:48:54,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,495 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 [2019-11-25 08:48:54,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,498 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 [2019-11-25 08:48:54,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,513 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 [2019-11-25 08:48:54,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,517 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 [2019-11-25 08:48:54,521 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,536 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 [2019-11-25 08:48:54,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,540 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 [2019-11-25 08:48:54,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,549 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 [2019-11-25 08:48:54,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,564 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,577 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 [2019-11-25 08:48:54,578 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,578 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,580 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 [2019-11-25 08:48:54,584 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,593 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 [2019-11-25 08:48:54,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,597 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 [2019-11-25 08:48:54,599 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,609 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 [2019-11-25 08:48:54,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,617 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 [2019-11-25 08:48:54,621 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,627 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 [2019-11-25 08:48:54,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,632 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 [2019-11-25 08:48:54,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,642 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 [2019-11-25 08:48:54,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,652 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,666 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 [2019-11-25 08:48:54,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,674 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,679 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 [2019-11-25 08:48:54,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,681 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:48:54,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,703 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-25 08:48:54,703 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,721 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:54,748 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-25 08:48:54,748 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:54,757 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 [2019-11-25 08:48:54,762 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-25 08:48:54,763 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:54,764 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2019-11-25 08:48:54,770 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-25 08:48:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,940 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 [2019-11-25 08:48:54,941 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2019-11-25 08:48:55,099 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. [2019-11-25 08:48:55,100 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 [2019-11-25 08:48:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:48:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-25 08:48:55,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-25 08:48:55,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-25 08:48:55,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-25 08:48:55,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2019-11-25 08:48:55,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:48:55,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2019-11-25 08:48:55,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:48:55,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:48:55,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2019-11-25 08:48:55,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:55,120 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2019-11-25 08:48:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2019-11-25 08:48:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-11-25 08:48:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:48:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-25 08:48:55,147 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-25 08:48:55,147 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-25 08:48:55,147 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:48:55,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-11-25 08:48:55,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:48:55,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:55,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:55,149 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:55,150 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:48:55,150 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2019-11-25 08:48:55,150 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2019-11-25 08:48:55,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,151 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2019-11-25 08:48:55,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071552628] [2019-11-25 08:48:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-11-25 08:48:55,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558906538] [2019-11-25 08:48:55,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,182 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,182 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2019-11-25 08:48:55,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285843111] [2019-11-25 08:48:55,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:48:55,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285843111] [2019-11-25 08:48:55,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:55,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:48:55,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811775107] [2019-11-25 08:48:55,272 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:55,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:55,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:55,273 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:55,273 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:48:55,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:55,273 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:55,273 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-11-25 08:48:55,273 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:55,273 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:55,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:55,307 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:55,311 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:48:55,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:48:55,328 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:48:55,331 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:55,331 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:55,331 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:55,332 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:55,332 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:55,332 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,332 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:55,332 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:55,332 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-11-25 08:48:55,332 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:55,332 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:55,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,364 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:55,364 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,373 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 [2019-11-25 08:48:55,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:55,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:55,375 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:55,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:55,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:55,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:55,377 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 [2019-11-25 08:48:55,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,396 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 [2019-11-25 08:48:55,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:55,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:55,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:55,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:55,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:55,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:55,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:55,402 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:55,404 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:48:55,405 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:48:55,413 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:48:55,413 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:55,413 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-25 08:48:55,415 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 [2019-11-25 08:48:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:48:55,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,512 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:55,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:55,513 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 [2019-11-25 08:48:55,513 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:48:55,576 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. [2019-11-25 08:48:55,578 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 [2019-11-25 08:48:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:48:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-11-25 08:48:55,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2019-11-25 08:48:55,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2019-11-25 08:48:55,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-25 08:48:55,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-11-25 08:48:55,586 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:48:55,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2019-11-25 08:48:55,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-25 08:48:55,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:48:55,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-11-25 08:48:55,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:55,593 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-11-25 08:48:55,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-11-25 08:48:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-25 08:48:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:48:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2019-11-25 08:48:55,603 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-25 08:48:55,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:55,607 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2019-11-25 08:48:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:55,632 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-25 08:48:55,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:48:55,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2019-11-25 08:48:55,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:48:55,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2019-11-25 08:48:55,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-25 08:48:55,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-25 08:48:55,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2019-11-25 08:48:55,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:55,636 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-25 08:48:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2019-11-25 08:48:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-11-25 08:48:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:48:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-25 08:48:55,639 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:48:55,639 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-25 08:48:55,639 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:48:55,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2019-11-25 08:48:55,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:48:55,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:55,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:55,646 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:55,647 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:48:55,647 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 295#L18 assume !(main_~i~0 <= 0); 287#L20 call main_#t~ret3 := rec(main_~i~0);< 286#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 291#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 292#L5 assume !(0 == ~a); 290#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 293#L5 assume 0 == ~a;#res := 0; 304#recFINAL assume true; 301#recEXIT >#34#return; 302#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 296#L10-2 assume !(~rescopy~0 > 0); 297#L10-3 #res := 1 + ~res~0; 300#recFINAL assume true; 303#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 299#L10-2 [2019-11-25 08:48:55,647 INFO L796 eck$LassoCheckResult]: Loop: 299#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 299#L10-2 [2019-11-25 08:48:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2019-11-25 08:48:55,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230916521] [2019-11-25 08:48:55,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-11-25 08:48:55,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932229774] [2019-11-25 08:48:55,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,711 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,713 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2019-11-25 08:48:55,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597012602] [2019-11-25 08:48:55,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,760 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,785 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:55,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:55,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:55,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:55,786 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:48:55,786 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,786 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:55,786 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:55,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-11-25 08:48:55,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:55,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:55,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,826 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:55,826 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:48:55,833 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 /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:48:55,845 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 [2019-11-25 08:48:55,854 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:48:55,856 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:55,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:55,856 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:55,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:55,856 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:55,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:55,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:55,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:55,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-11-25 08:48:55,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:55,857 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:55,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:55,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:55,889 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,897 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 [2019-11-25 08:48:55,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:55,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:55,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:55,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:55,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:55,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:55,901 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 [2019-11-25 08:48:55,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:55,906 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:48:55,906 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1efbd071-4957-4285-a5cd-4b0d29329086/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:55,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:48:55,911 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:48:55,911 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:55,911 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-11-25 08:48:55,913 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 [2019-11-25 08:48:55,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:55,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:55,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,998 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:55,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:55,999 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 [2019-11-25 08:48:55,999 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:48:56,041 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. [2019-11-25 08:48:56,043 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 [2019-11-25 08:48:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:48:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-25 08:48:56,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:48:56,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:56,044 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:48:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:56,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:56,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:56,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:56,144 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:56,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:56,144 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 [2019-11-25 08:48:56,144 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:48:56,187 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. [2019-11-25 08:48:56,189 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 [2019-11-25 08:48:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:48:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-25 08:48:56,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:48:56,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:56,190 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:48:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:56,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:56,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:56,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:48:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:56,269 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:48:56,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:56,270 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 [2019-11-25 08:48:56,270 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:48:56,311 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. [2019-11-25 08:48:56,312 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 [2019-11-25 08:48:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:48:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-25 08:48:56,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2019-11-25 08:48:56,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:56,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2019-11-25 08:48:56,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:56,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2019-11-25 08:48:56,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:56,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2019-11-25 08:48:56,315 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:48:56,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-25 08:48:56,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:48:56,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:48:56,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:48:56,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:48:56,316 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:56,316 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:56,316 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:56,316 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:48:56,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:56,316 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:48:56,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:48:56,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:48:56 BoogieIcfgContainer [2019-11-25 08:48:56,321 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:48:56,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:56,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:56,322 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:56,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:53" (3/4) ... [2019-11-25 08:48:56,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:48:56,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:56,327 INFO L168 Benchmark]: Toolchain (without parser) took 3649.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 956.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 133.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,328 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,329 INFO L168 Benchmark]: Boogie Preprocessor took 13.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,329 INFO L168 Benchmark]: RCFGBuilder took 197.61 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,330 INFO L168 Benchmark]: BuchiAutomizer took 3106.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.3 MB in the end (delta: 161.5 MB). Peak memory consumption was 161.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:56,330 INFO L168 Benchmark]: Witness Printer took 4.00 ms. Allocated memory is still 1.2 GB. Free memory is still 956.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:56,333 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 297.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -187.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 197.61 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3106.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 956.3 MB in the end (delta: 161.5 MB). Peak memory consumption was 161.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.00 ms. Allocated memory is still 1.2 GB. Free memory is still 956.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 3.0s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: 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: 87ms 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...