./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 0.2.0-a4ecdab [2020-11-30 00:38:47,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:38:47,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:38:47,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:38:47,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:38:47,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:38:47,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:38:47,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:38:47,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:38:47,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:38:47,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:38:47,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:38:47,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:38:47,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:38:47,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:38:47,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:38:47,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:38:47,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:38:47,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:38:47,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:38:47,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:38:47,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:38:47,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:38:47,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:38:47,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:38:47,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:38:47,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:38:47,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:38:47,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:38:47,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:38:47,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:38:47,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:38:47,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:38:47,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:38:47,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:38:47,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:38:47,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:38:47,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:38:47,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:38:47,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:38:47,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:38:47,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:38:47,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:38:47,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:38:47,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:38:47,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:38:47,931 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:38:47,931 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:38:47,931 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:38:47,932 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:38:47,932 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:38:47,932 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:38:47,932 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:38:47,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:38:47,933 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:38:47,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:38:47,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:38:47,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:38:47,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:38:47,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:38:47,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:38:47,934 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:38:47,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:38:47,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:38:47,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:38:47,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:38:47,936 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:38:47,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:38:47,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:38:47,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:38:47,937 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:38:47,938 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:38:47,938 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bd2b65619821bf052931b3532da39241349d4f [2020-11-30 00:38:48,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:38:48,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:38:48,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:38:48,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:38:48,254 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:38:48,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2020-11-30 00:38:48,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/data/4c998b230/ed294465b20342f9950f902e65d80e57/FLAGb4cc4caad [2020-11-30 00:38:48,894 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:38:48,896 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/sv-benchmarks/c/termination-numeric/rec_counter1.c [2020-11-30 00:38:48,915 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/data/4c998b230/ed294465b20342f9950f902e65d80e57/FLAGb4cc4caad [2020-11-30 00:38:49,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/bin/uautomizer/data/4c998b230/ed294465b20342f9950f902e65d80e57 [2020-11-30 00:38:49,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:38:49,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:38:49,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:49,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:38:49,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:38:49,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f32d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49, skipping insertion in model container [2020-11-30 00:38:49,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:38:49,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:38:49,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:49,450 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:38:49,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:38:49,538 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:38:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49 WrapperNode [2020-11-30 00:38:49,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:38:49,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:49,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:38:49,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:38:49,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:38:49,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:38:49,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:38:49,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:38:49,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... [2020-11-30 00:38:49,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:38:49,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:38:49,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:38:49,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:38:49,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-11-30 00:38:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-11-30 00:38:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:38:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:38:49,902 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:38:49,902 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:38:49,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:49 BoogieIcfgContainer [2020-11-30 00:38:49,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:38:49,905 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:38:49,906 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:38:49,910 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:38:49,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:38:49,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:38:49" (1/3) ... [2020-11-30 00:38:49,913 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@631cc02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:38:49, skipping insertion in model container [2020-11-30 00:38:49,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:38:49,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:38:49" (2/3) ... [2020-11-30 00:38:49,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@631cc02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:38:49, skipping insertion in model container [2020-11-30 00:38:49,915 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:38:49,915 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:49" (3/3) ... [2020-11-30 00:38:49,917 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2020-11-30 00:38:49,976 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:38:49,977 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:38:49,977 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:38:49,977 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:38:49,977 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:38:49,977 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:38:49,978 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:38:49,978 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:38:49,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 00:38:50,021 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-30 00:38:50,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:38:50,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:38:50,044 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:38:50,047 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:38:50,047 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:38:50,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-30 00:38:50,064 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-30 00:38:50,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:38:50,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:38:50,065 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:38:50,065 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:38:50,074 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2020-11-30 00:38:50,074 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2020-11-30 00:38:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:50,091 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2020-11-30 00:38:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:50,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314561676] [2020-11-30 00:38:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2020-11-30 00:38:50,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:50,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499612594] [2020-11-30 00:38:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,323 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:50,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2020-11-30 00:38:50,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:50,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836264210] [2020-11-30 00:38:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:50,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:50,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:50,604 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:50,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:50,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:50,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:50,606 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:38:50,606 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:50,606 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:50,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:50,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2020-11-30 00:38:50,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:50,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:50,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:50,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:50,873 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:50,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:50,885 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 [2020-11-30 00:38:50,898 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:50,899 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:50,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:50,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:50,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:50,934 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:50,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:50,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:50,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:50,974 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_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,020 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,021 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:51,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,053 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,058 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_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,086 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:38:51,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-6} Honda state: {rec_#in~a=-6} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=0}, {rec_#in~a=-1}] Lambdas: [0, 10, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-11-30 00:38:51,316 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:51,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:51,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:51,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:51,317 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:38:51,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,318 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:51,318 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:51,318 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2020-11-30 00:38:51,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:51,318 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:51,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:51,586 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:51,587 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,610 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:51,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,661 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,666 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,667 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,712 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,712 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,744 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:51,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,780 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 [2020-11-30 00:38:51,788 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,788 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,831 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_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,866 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,905 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:51,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,963 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_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:51,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:51,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:51,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:51,994 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:52,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:52,028 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,032 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:52,032 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_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:52,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:52,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:52,068 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:38:52,068 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:52,097 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:38:52,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:38:52,255 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:38:52,258 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:52,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:52,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:52,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:52,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:38:52,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:52,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:52,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2020-11-30 00:38:52,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:52,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:52,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:52,452 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:52,458 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:52,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,593 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 [2020-11-30 00:38:52,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,606 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,632 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,640 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,667 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,673 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,704 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:52,766 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,774 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:52,815 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,819 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 [2020-11-30 00:38:52,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,864 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:52,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:52,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:52,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:52,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:52,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:52,928 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:52,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:52,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:52,930 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:38:52,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:52,941 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-11-30 00:38:52,942 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-30 00:38:52,969 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:38:53,202 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-30 00:38:53,203 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:53,209 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:53,217 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2020-11-30 00:38:53,218 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:38:53,219 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2020-11-30 00:38:53,253 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-30 00:38:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:53,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:38:53,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:53,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:38:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:53,436 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-11-30 00:38:53,438 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2020-11-30 00:38:53,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2020-11-30 00:38:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 00:38:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:38:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2020-11-30 00:38:53,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-30 00:38:53,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:53,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 00:38:53,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:53,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-30 00:38:53,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:53,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2020-11-30 00:38:53,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:38:53,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2020-11-30 00:38:53,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 00:38:53,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 00:38:53,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2020-11-30 00:38:53,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:38:53,716 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-30 00:38:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2020-11-30 00:38:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2020-11-30 00:38:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 00:38:53,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-11-30 00:38:53,756 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-30 00:38:53,757 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-30 00:38:53,757 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:38:53,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2020-11-30 00:38:53,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:38:53,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:38:53,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:38:53,762 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:53,763 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:38:53,763 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2020-11-30 00:38:53,763 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2020-11-30 00:38:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2020-11-30 00:38:53,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:53,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53236853] [2020-11-30 00:38:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:53,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:53,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:53,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2020-11-30 00:38:53,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:53,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614424398] [2020-11-30 00:38:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:53,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:53,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:53,842 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:53,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2020-11-30 00:38:53,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:53,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93130044] [2020-11-30 00:38:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:53,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-30 00:38:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:38:53,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93130044] [2020-11-30 00:38:53,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:38:53,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:38:53,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031432372] [2020-11-30 00:38:53,977 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:53,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:53,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:53,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:53,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:38:53,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:53,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:53,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:53,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2020-11-30 00:38:53,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:53,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:53,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:53,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,024 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:54,024 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:54,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:54,029 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:38:54,084 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,131 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:38:54,134 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:54,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:54,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:54,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:54,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:38:54,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:54,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:54,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2020-11-30 00:38:54,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:54,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:54,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,181 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:54,181 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,186 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:54,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:54,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:54,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:54,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:54,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:54,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:54,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,194 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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 [2020-11-30 00:38:54,243 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:54,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:54,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:54,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:54,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:54,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:54,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:54,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:54,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:38:54,254 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:38:54,254 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,258 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:38:54,258 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:38:54,258 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:38:54,259 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,297 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:38:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:54,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:38:54,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:54,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:38:54,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:54,409 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-30 00:38:54,409 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 00:38:54,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2020-11-30 00:38:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:38:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:38:54,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2020-11-30 00:38:54,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2020-11-30 00:38:54,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:54,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2020-11-30 00:38:54,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:54,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-30 00:38:54,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:54,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2020-11-30 00:38:54,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:38:54,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2020-11-30 00:38:54,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-30 00:38:54,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-30 00:38:54,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-11-30 00:38:54,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:38:54,494 INFO L691 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-30 00:38:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-11-30 00:38:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-30 00:38:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:38:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2020-11-30 00:38:54,498 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2020-11-30 00:38:54,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:38:54,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:38:54,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:38:54,503 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2020-11-30 00:38:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:38:54,533 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-30 00:38:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:38:54,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2020-11-30 00:38:54,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:38:54,537 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2020-11-30 00:38:54,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-30 00:38:54,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-30 00:38:54,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2020-11-30 00:38:54,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:38:54,538 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-30 00:38:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2020-11-30 00:38:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-30 00:38:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:38:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-30 00:38:54,541 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-30 00:38:54,542 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-30 00:38:54,542 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:38:54,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2020-11-30 00:38:54,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:38:54,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:38:54,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:38:54,546 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:38:54,548 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:38:54,549 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 295#L18 assume !(main_~i~0 <= 0); 287#L20 call main_#t~ret3 := rec(main_~i~0);< 286#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 291#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 292#L5 assume !(0 == ~a); 290#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 293#L5 assume 0 == ~a;#res := 0; 304#recFINAL assume true; 301#recEXIT >#34#return; 302#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 296#L10-2 assume !(~rescopy~0 > 0); 297#L10-3 #res := 1 + ~res~0; 300#recFINAL assume true; 303#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 299#L10-2 [2020-11-30 00:38:54,549 INFO L796 eck$LassoCheckResult]: Loop: 299#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 299#L10-2 [2020-11-30 00:38:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2020-11-30 00:38:54,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:54,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860211500] [2020-11-30 00:38:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,573 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2020-11-30 00:38:54,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:54,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186362921] [2020-11-30 00:38:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,620 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2020-11-30 00:38:54,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:38:54,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121021338] [2020-11-30 00:38:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:38:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:38:54,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:38:54,653 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:38:54,667 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:54,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:54,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:54,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:54,668 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:38:54,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:54,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:54,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2020-11-30 00:38:54,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:54,668 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:54,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,779 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:54,779 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:38:54,791 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_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:38:54,839 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:38:54,890 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:38:54,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:38:54,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:38:54,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:38:54,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:38:54,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:38:54,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:38:54,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2020-11-30 00:38:54,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:38:54,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:38:54,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:38:54,935 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:38:54,936 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:54,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:38:54,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:38:54,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:38:54,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:38:54,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:38:54,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:38:54,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:38:54,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:38:54,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:38:54,957 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:38:54,957 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e306981-b9db-4848-820f-f0108dfdfda5/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) [2020-11-30 00:38:54,961 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:38:54,961 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:38:54,961 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:38:54,961 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:38:55,002 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:38:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:38:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,170 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:55,172 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-30 00:38:55,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 00:38:55,237 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-30 00:38:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:38:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:38:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 00:38:55,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-30 00:38:55,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:55,243 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:38:55,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:38:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,349 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:55,351 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-30 00:38:55,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 00:38:55,419 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2020-11-30 00:38:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:38:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:38:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-30 00:38:55,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-30 00:38:55,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:55,422 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:38:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:38:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:38:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:38:55,524 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:38:55,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:38:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:38:55,526 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2020-11-30 00:38:55,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 00:38:55,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2020-11-30 00:38:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:38:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:38:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-30 00:38:55,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2020-11-30 00:38:55,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:55,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2020-11-30 00:38:55,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:55,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2020-11-30 00:38:55,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:38:55,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2020-11-30 00:38:55,603 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:38:55,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-11-30 00:38:55,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:38:55,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:38:55,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:38:55,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:38:55,604 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:38:55,604 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:38:55,604 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:38:55,604 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:38:55,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:38:55,605 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:38:55,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:38:55,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:38:55 BoogieIcfgContainer [2020-11-30 00:38:55,615 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:38:55,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:38:55,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:38:55,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:38:55,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:38:49" (3/4) ... [2020-11-30 00:38:55,621 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:38:55,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:38:55,631 INFO L168 Benchmark]: Toolchain (without parser) took 6368.37 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 63.4 MB in the beginning and 47.1 MB in the end (delta: 16.3 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:55,631 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:55,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.12 ms. Allocated memory is still 92.3 MB. Free memory was 63.2 MB in the beginning and 71.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:55,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.05 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:55,633 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 69.2 MB in the end (delta: 993.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:55,636 INFO L168 Benchmark]: RCFGBuilder took 285.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 60.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:55,636 INFO L168 Benchmark]: BuchiAutomizer took 5709.32 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 60.1 MB in the beginning and 47.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:38:55,637 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 136.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:38:55,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.12 ms. Allocated memory is still 92.3 MB. Free memory was 63.2 MB in the beginning and 71.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.05 ms. Allocated memory is still 92.3 MB. Free memory was 71.5 MB in the beginning and 70.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 92.3 MB. Free memory was 70.2 MB in the beginning and 69.2 MB in the end (delta: 993.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 285.88 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 60.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5709.32 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 60.1 MB in the beginning and 47.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. * Witness Printer took 6.03 ms. Allocated memory is still 136.3 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 4.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf98 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf120 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 293ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...