./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 82bd2b65619821bf052931b3532da39241349d4f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:59:29,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:59:29,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:59:29,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:59:29,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:59:29,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:59:29,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:59:29,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:59:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:59:29,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:59:29,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:59:29,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:59:29,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:59:29,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:59:29,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:59:29,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:59:29,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:59:29,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:59:29,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:59:29,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:59:29,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:59:29,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:59:29,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:59:29,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:59:29,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:59:29,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:59:29,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:59:29,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:59:29,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:59:29,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:59:29,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:59:29,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:59:29,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:59:29,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:59:29,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:59:29,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:59:29,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:59:29,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:59:29,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:59:29,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:59:29,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:59:29,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:59:29,765 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:59:29,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:59:29,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:59:29,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:59:29,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:59:29,770 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:59:29,770 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:59:29,770 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:59:29,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:59:29,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:59:29,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:59:29,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:59:29,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:59:29,773 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:59:29,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:59:29,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:59:29,774 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:59:29,774 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:59:29,775 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bd2b65619821bf052931b3532da39241349d4f [2019-10-22 08:59:29,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:59:29,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:59:29,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:59:29,820 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:59:29,821 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:59:29,821 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-10-22 08:59:29,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/data/8829456f8/8a950712fa074abd9feca0d5765de1b8/FLAG51396a39b [2019-10-22 08:59:30,233 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:59:30,234 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/sv-benchmarks/c/termination-numeric/rec_counter1.c [2019-10-22 08:59:30,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/data/8829456f8/8a950712fa074abd9feca0d5765de1b8/FLAG51396a39b [2019-10-22 08:59:30,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/data/8829456f8/8a950712fa074abd9feca0d5765de1b8 [2019-10-22 08:59:30,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:59:30,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:59:30,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:30,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:59:30,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:59:30,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b56aeb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30, skipping insertion in model container [2019-10-22 08:59:30,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,682 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:59:30,697 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:59:30,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:30,816 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:59:30,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:59:30,895 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:59:30,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30 WrapperNode [2019-10-22 08:59:30,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:59:30,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:30,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:59:30,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:59:30,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:59:30,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:59:30,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:59:30,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:59:30,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... [2019-10-22 08:59:30,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:59:30,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:59:30,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:59:30,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:59:30,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,006 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-10-22 08:59:31,006 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-10-22 08:59:31,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:59:31,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:59:31,172 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:59:31,172 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:59:31,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:31 BoogieIcfgContainer [2019-10-22 08:59:31,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:59:31,174 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:59:31,174 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:59:31,190 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:59:31,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:31,194 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:59:30" (1/3) ... [2019-10-22 08:59:31,202 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42e575a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:31, skipping insertion in model container [2019-10-22 08:59:31,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:31,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:59:30" (2/3) ... [2019-10-22 08:59:31,203 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42e575a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:59:31, skipping insertion in model container [2019-10-22 08:59:31,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:59:31,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:31" (3/3) ... [2019-10-22 08:59:31,205 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_counter1.c [2019-10-22 08:59:31,344 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:59:31,344 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:59:31,345 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:59:31,345 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:59:31,345 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:59:31,345 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:59:31,345 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:59:31,345 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:59:31,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-10-22 08:59:31,392 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-10-22 08:59:31,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:31,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:31,400 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:59:31,401 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:31,401 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:59:31,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-10-22 08:59:31,403 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-10-22 08:59:31,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:31,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:31,404 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:59:31,405 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:59:31,412 INFO L791 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2019-10-22 08:59:31,413 INFO L793 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2019-10-22 08:59:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2019-10-22 08:59:31,428 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:31,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122708771] [2019-10-22 08:59:31,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,508 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:31,509 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2019-10-22 08:59:31,509 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:31,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049539802] [2019-10-22 08:59:31,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,520 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2019-10-22 08:59:31,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:31,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796541093] [2019-10-22 08:59:31,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:31,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:31,535 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:31,594 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:31,594 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:31,594 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:31,595 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:31,595 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:31,595 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,595 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:31,595 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:31,595 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Loop [2019-10-22 08:59:31,595 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:31,596 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:31,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,720 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:31,721 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,734 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,734 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:31,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,744 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:31,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,754 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,762 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,774 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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) [2019-10-22 08:59:31,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,790 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:31,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-1} Honda state: {rec_#in~a=-1} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 0, 9] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:31,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:31,838 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:31,838 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-10-22 08:59:31,875 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:31,875 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:31,875 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:31,875 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:31,876 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:31,876 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:31,876 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:31,876 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:31,876 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-10-22 08:59:31,876 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:31,876 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:31,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:31,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,001 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:32,001 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:32,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,008 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,012 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,012 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:32,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,024 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,027 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:32,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,035 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,038 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,038 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,049 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,057 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,066 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,074 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,074 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,081 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,088 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,088 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,098 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,112 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:59:32,120 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/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:32,125 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:32,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:32,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:32,144 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:32,145 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:32,146 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:32,146 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:32,146 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:32,146 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:32,146 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,146 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:32,146 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:32,146 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration1_Lasso [2019-10-22 08:59:32,146 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:32,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:32,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,245 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:32,249 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:32,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,252 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,252 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,253 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,253 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,253 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,255 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,255 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,258 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,258 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,259 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,259 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,259 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,259 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,260 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,260 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,260 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,261 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,262 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,262 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,262 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,262 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,262 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,263 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,263 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,264 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,264 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,265 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,265 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,265 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,265 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,265 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,266 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,266 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,268 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,268 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,268 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,269 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,269 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,269 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,269 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,269 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,271 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,271 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,272 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,272 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,272 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,272 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,272 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,273 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,274 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,274 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,275 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,275 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,275 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,275 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,275 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,276 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,277 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,278 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,278 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,278 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,278 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,278 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,279 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,280 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,280 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,281 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,281 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,281 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,281 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,281 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,282 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,282 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,283 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,283 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,284 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,284 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,284 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,284 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,285 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,285 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,293 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,295 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,295 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:32,296 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,296 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:32,296 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,296 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:32,296 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:32,297 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:32,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:32,298 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:32,299 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:32,299 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:59:32,299 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:32,305 INFO L400 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-10-22 08:59:32,305 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-10-22 08:59:32,428 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:32,511 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-10-22 08:59:32,514 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-10-22 08:59:32,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:32,521 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-10-22 08:59:32,526 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:32,526 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2019-10-22 08:59:32,534 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:59:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:32,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:32,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:32,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:59:32,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:32,671 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-10-22 08:59:32,672 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2019-10-22 08:59:32,813 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2019-10-22 08:59:32,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:59:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-10-22 08:59:32,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:59:32,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:32,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:59:32,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:32,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:59:32,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:32,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2019-10-22 08:59:32,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:32,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2019-10-22 08:59:32,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-10-22 08:59:32,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-10-22 08:59:32,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2019-10-22 08:59:32,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:32,837 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2019-10-22 08:59:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2019-10-22 08:59:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2019-10-22 08:59:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 08:59:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-10-22 08:59:32,866 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 08:59:32,866 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 08:59:32,866 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:59:32,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-10-22 08:59:32,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:32,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:32,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:32,868 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:32,868 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:32,869 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2019-10-22 08:59:32,869 INFO L793 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2019-10-22 08:59:32,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:32,869 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2019-10-22 08:59:32,869 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:32,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146952287] [2019-10-22 08:59:32,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:32,881 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-10-22 08:59:32,890 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:32,890 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464601046] [2019-10-22 08:59:32,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:32,897 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2019-10-22 08:59:32,898 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:32,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78026589] [2019-10-22 08:59:32,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:32,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 08:59:32,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78026589] [2019-10-22 08:59:32,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:59:32,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:59:32,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416977426] [2019-10-22 08:59:32,978 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:32,978 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:32,979 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:32,979 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:32,979 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:32,979 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:32,979 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:32,979 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:32,979 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-10-22 08:59:32,979 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:32,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:32,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:32,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,003 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:33,003 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:33,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:33,008 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:33,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:33,016 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:33,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:33,025 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:33,025 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:33,025 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:33,025 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:33,026 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:33,026 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:33,026 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:33,026 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:33,026 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration2_Loop [2019-10-22 08:59:33,026 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:33,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:33,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,055 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:33,055 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:33,056 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:33,056 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:33,056 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:33,057 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:33,057 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:33,057 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:33,057 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:33,057 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:33,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:59:33,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:33,059 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:33,059 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:33,059 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:33,059 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:33,059 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:33,060 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:33,060 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:33,062 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:33,064 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:33,064 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:33,064 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:33,064 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:33,064 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:33,065 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-10-22 08:59:33,065 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,130 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:33,131 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:59:33,131 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:59:33,169 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2019-10-22 08:59:33,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2019-10-22 08:59:33,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2019-10-22 08:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2019-10-22 08:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2019-10-22 08:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-10-22 08:59:33,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:33,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2019-10-22 08:59:33,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-10-22 08:59:33,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-10-22 08:59:33,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-10-22 08:59:33,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:33,179 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-10-22 08:59:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-10-22 08:59:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-10-22 08:59:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:59:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2019-10-22 08:59:33,184 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-10-22 08:59:33,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:59:33,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:59:33,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:59:33,188 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2019-10-22 08:59:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:59:33,215 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-10-22 08:59:33,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:59:33,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2019-10-22 08:59:33,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:33,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2019-10-22 08:59:33,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-10-22 08:59:33,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-10-22 08:59:33,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2019-10-22 08:59:33,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:59:33,219 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-22 08:59:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2019-10-22 08:59:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2019-10-22 08:59:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:59:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-10-22 08:59:33,223 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-10-22 08:59:33,224 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-10-22 08:59:33,224 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:59:33,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2019-10-22 08:59:33,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:59:33,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:59:33,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:59:33,226 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 08:59:33,226 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:59:33,226 INFO L791 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 295#L18 assume !(main_~i~0 <= 0); 287#L20 call main_#t~ret3 := rec(main_~i~0);< 286#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 291#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 292#L5 assume !(0 == ~a); 290#L8 call #t~ret0 := rec(~a - 1);< 289#recENTRY ~a := #in~a; 293#L5 assume 0 == ~a;#res := 0; 304#recFINAL assume true; 301#recEXIT >#34#return; 302#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 296#L10-2 assume !(~rescopy~0 > 0); 297#L10-3 #res := 1 + ~res~0; 300#recFINAL assume true; 303#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 299#L10-2 [2019-10-22 08:59:33,226 INFO L793 eck$LassoCheckResult]: Loop: 299#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 299#L10-2 [2019-10-22 08:59:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2019-10-22 08:59:33,227 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:33,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413840512] [2019-10-22 08:59:33,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,241 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-10-22 08:59:33,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:33,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784260946] [2019-10-22 08:59:33,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,246 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,246 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2019-10-22 08:59:33,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:59:33,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774916683] [2019-10-22 08:59:33,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:59:33,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:59:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:59:33,260 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:59:33,274 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:33,274 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:33,274 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:33,274 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:33,274 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:59:33,275 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:33,275 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:33,275 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:33,275 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-10-22 08:59:33,275 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:33,275 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:33,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,329 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:33,329 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:59:33,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:59:33,338 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ba6ba0e-3209-4987-9359-d99822a607f4/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 [2019-10-22 08:59:33,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:59:33,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:59:33,355 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:59:33,358 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:59:33,358 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:59:33,358 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:59:33,358 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:59:33,359 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:59:33,359 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:59:33,359 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:59:33,359 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:59:33,359 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1.c_Iteration3_Loop [2019-10-22 08:59:33,359 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:59:33,359 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:59:33,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:59:33,384 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:59:33,384 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:59:33,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:59:33,385 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:59:33,385 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:59:33,386 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:59:33,386 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:59:33,386 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:59:33,386 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:59:33,386 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:59:33,388 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:59:33,389 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:59:33,390 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:59:33,390 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:59:33,390 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:59:33,390 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:59:33,390 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2019-10-22 08:59:33,391 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:59:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,461 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:33,462 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:59:33,462 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:59:33,496 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2019-10-22 08:59:33,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-10-22 08:59:33,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-10-22 08:59:33,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,500 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,566 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:33,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:59:33,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:59:33,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2019-10-22 08:59:33,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-10-22 08:59:33,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2019-10-22 08:59:33,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,609 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:59:33,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:59:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:59:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:59:33,665 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:59:33,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:59:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:59:33,665 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:59:33,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:59:33,703 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2019-10-22 08:59:33,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:59:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:59:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-10-22 08:59:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2019-10-22 08:59:33,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2019-10-22 08:59:33,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2019-10-22 08:59:33,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:59:33,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2019-10-22 08:59:33,707 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:33,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-10-22 08:59:33,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:59:33,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:59:33,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:59:33,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:59:33,707 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:33,707 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:33,707 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:59:33,708 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:59:33,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:59:33,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:59:33,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:59:33,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:59:33 BoogieIcfgContainer [2019-10-22 08:59:33,714 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:59:33,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:59:33,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:59:33,714 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:59:33,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:59:31" (3/4) ... [2019-10-22 08:59:33,719 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:59:33,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:59:33,721 INFO L168 Benchmark]: Toolchain (without parser) took 3053.66 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -197.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:33,722 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:33,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:33,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:33,726 INFO L168 Benchmark]: Boogie Preprocessor took 17.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:33,726 INFO L168 Benchmark]: RCFGBuilder took 228.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:33,727 INFO L168 Benchmark]: BuchiAutomizer took 2539.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:59:33,727 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:59:33,729 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 227.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -199.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2539.63 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -16.0 MB). Peak memory consumption was 62.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.46 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 227ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...