./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Nested-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Nested-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:23:53,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:23:53,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:23:53,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:23:53,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:23:53,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:23:53,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:23:53,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:23:53,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:23:53,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:23:53,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:23:53,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:23:53,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:23:53,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:23:53,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:23:53,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:23:53,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:23:53,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:23:53,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:23:53,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:23:53,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:23:53,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:23:53,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:23:53,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:23:53,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:23:53,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:23:53,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:23:53,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:23:53,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:23:53,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:23:53,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:23:53,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:23:53,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:23:53,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:23:53,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:23:53,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:23:53,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:23:53,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:23:53,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:23:53,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:23:53,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:23:53,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 23:23:53,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:23:53,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:23:53,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:23:53,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:23:53,789 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:23:53,789 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:23:53,789 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:23:53,789 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:23:53,790 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:23:53,790 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:23:53,790 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:23:53,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:23:53,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:23:53,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:23:53,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:23:53,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:23:53,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:23:53,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:23:53,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:23:53,792 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:23:53,793 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:23:53,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:23:53,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:23:53,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:23:53,794 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:23:53,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:23:53,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:23:53,795 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:23:53,797 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:23:53,797 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 -> 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 [2019-11-19 23:23:53,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:23:54,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:23:54,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:23:54,016 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:23:54,017 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:23:54,019 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Nested-2.c [2019-11-19 23:23:54,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/data/36809220d/a363ed5a0e69419982f7f06b99d1592d/FLAG72584bb54 [2019-11-19 23:23:54,550 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:23:54,551 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/sv-benchmarks/c/termination-restricted-15/Nested-2.c [2019-11-19 23:23:54,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/data/36809220d/a363ed5a0e69419982f7f06b99d1592d/FLAG72584bb54 [2019-11-19 23:23:54,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/data/36809220d/a363ed5a0e69419982f7f06b99d1592d [2019-11-19 23:23:54,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:23:54,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:23:54,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:23:54,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:23:54,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:23:54,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:23:54" (1/1) ... [2019-11-19 23:23:54,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd5c1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:54, skipping insertion in model container [2019-11-19 23:23:54,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:23:54" (1/1) ... [2019-11-19 23:23:54,934 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:23:54,951 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:23:55,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:23:55,095 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:23:55,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:23:55,187 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:23:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55 WrapperNode [2019-11-19 23:23:55,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:23:55,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:23:55,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:23:55,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:23:55,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:23:55,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:23:55,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:23:55,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:23:55,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... [2019-11-19 23:23:55,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:23:55,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:23:55,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:23:55,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:23:55,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:23:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:23:55,426 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:23:55,427 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-19 23:23:55,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:23:55 BoogieIcfgContainer [2019-11-19 23:23:55,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:23:55,428 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:23:55,428 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:23:55,431 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:23:55,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:23:55,432 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:23:54" (1/3) ... [2019-11-19 23:23:55,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6913c4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:23:55, skipping insertion in model container [2019-11-19 23:23:55,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:23:55,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:23:55" (2/3) ... [2019-11-19 23:23:55,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6913c4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:23:55, skipping insertion in model container [2019-11-19 23:23:55,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:23:55,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:23:55" (3/3) ... [2019-11-19 23:23:55,435 INFO L371 chiAutomizerObserver]: Analyzing ICFG Nested-2.c [2019-11-19 23:23:55,477 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:23:55,477 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:23:55,478 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:23:55,478 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:23:55,478 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:23:55,478 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:23:55,478 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:23:55,478 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:23:55,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 23:23:55,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:23:55,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:23:55,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:23:55,525 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:23:55,525 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:23:55,525 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:23:55,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 23:23:55,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 23:23:55,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:23:55,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:23:55,528 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:23:55,528 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 23:23:55,535 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 9#L11-2true [2019-11-19 23:23:55,535 INFO L796 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~i~0 < 10); 3#L12-2true assume !(main_~j~0 < 12); 10#L12-3true main_~i~0 := 1 + main_~i~0; 9#L11-2true [2019-11-19 23:23:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:55,542 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 23:23:55,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:55,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067362584] [2019-11-19 23:23:55,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:55,645 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:23:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-19 23:23:55,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:55,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620793411] [2019-11-19 23:23:55,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:55,671 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:23:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-19 23:23:55,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:55,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080589446] [2019-11-19 23:23:55,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:23:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:23:55,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080589446] [2019-11-19 23:23:55,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:23:55,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:23:55,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599438588] [2019-11-19 23:23:55,781 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:23:55,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:23:55,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:23:55,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:23:55,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:23:55,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:23:55,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:23:55,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2019-11-19 23:23:55,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:23:55,784 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:23:55,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:55,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:55,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:55,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:55,930 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:23:55,931 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:23:55,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:23:55,942 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:23:55,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:23:55,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:23:55,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:23:55,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:23:55,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:23:55,982 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:23:55,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:55,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:23:55,999 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:23:56,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:23:56,019 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:23:56,029 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:23:56,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:23:56,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:23:56,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:23:56,029 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:23:56,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:23:56,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:23:56,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2019-11-19 23:23:56,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:23:56,030 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:23:56,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,115 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:23:56,120 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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) [2019-11-19 23:23:56,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,142 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:23:56,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,149 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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) [2019-11-19 23:23:56,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:23:56,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:23:56,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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) [2019-11-19 23:23:56,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:23:56,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:23:56,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:23:56,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:23:56,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,229 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:23:56,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:23:56,234 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,239 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:23:56,239 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:23:56,239 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:23:56,240 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-11-19 23:23:56,244 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:23:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:23:56,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:23:56,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:23:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:23:56,291 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:23:56,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:23:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:23:56,320 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-19 23:23:56,321 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-19 23:23:56,359 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-11-19 23:23:56,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 23:23:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:23:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-19 23:23:56,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-19 23:23:56,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-19 23:23:56,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-19 23:23:56,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-19 23:23:56,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 23:23:56,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-19 23:23:56,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-19 23:23:56,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-19 23:23:56,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-19 23:23:56,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:23:56,382 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:23:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-19 23:23:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-19 23:23:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-19 23:23:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-19 23:23:56,406 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-19 23:23:56,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:23:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:23:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:23:56,410 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 3 states. [2019-11-19 23:23:56,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:23:56,418 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2019-11-19 23:23:56,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:23:56,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2019-11-19 23:23:56,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 23:23:56,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2019-11-19 23:23:56,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-19 23:23:56,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-19 23:23:56,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-19 23:23:56,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:23:56,421 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-19 23:23:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-19 23:23:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-19 23:23:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 23:23:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-19 23:23:56,422 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:23:56,422 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-19 23:23:56,422 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:23:56,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-19 23:23:56,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 23:23:56,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:23:56,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:23:56,423 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-19 23:23:56,423 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-19 23:23:56,424 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 89#L11-2 assume !!(main_~i~0 < 10); 85#L12-2 [2019-11-19 23:23:56,424 INFO L796 eck$LassoCheckResult]: Loop: 85#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~j~0 := 2 + main_~j~0; 85#L12-2 [2019-11-19 23:23:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:56,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-19 23:23:56,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:56,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346876110] [2019-11-19 23:23:56,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,431 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:23:56,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:56,431 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-19 23:23:56,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:56,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430181710] [2019-11-19 23:23:56,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,437 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:23:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:56,438 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-19 23:23:56,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:23:56,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631548709] [2019-11-19 23:23:56,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:23:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:23:56,446 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:23:56,463 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:23:56,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:23:56,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:23:56,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:23:56,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:23:56,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:23:56,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:23:56,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2019-11-19 23:23:56,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:23:56,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:23:56,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,525 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:23:56,525 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:23:56,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:23:56,537 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:23:56,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 [2019-11-19 23:23:56,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:23:56,564 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 [2019-11-19 23:23:56,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:23:56,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:23:56,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:23:56,594 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:23:56,594 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:23:56,594 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:23:56,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:23:56,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:23:56,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,595 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:23:56,595 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:23:56,595 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2019-11-19 23:23:56,595 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:23:56,595 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:23:56,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:23:56,664 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:23:56,665 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 [2019-11-19 23:23:56,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:23:56,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:23:56,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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) [2019-11-19 23:23:56,709 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:23:56,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:23:56,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:23:56,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:23:56,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:23:56,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:23:56,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:23:56,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:23:56,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:23:56,735 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:23:56,735 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69c0ca2b-3c58-41ff-992f-6cc41348f074/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 [2019-11-19 23:23:56,749 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:23:56,749 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:23:56,749 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:23:56,750 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-11-19 23:23:56,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:23:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:23:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:23:56,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:23:56,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:23:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:23:56,788 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:23:56,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:23:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:23:56,789 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-19 23:23:56,789 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-19 23:23:56,799 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 4 states. [2019-11-19 23:23:56,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:23:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-19 23:23:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-19 23:23:56,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-19 23:23:56,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-19 23:23:56,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-19 23:23:56,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:23:56,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-19 23:23:56,803 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:23:56,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-11-19 23:23:56,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:23:56,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:23:56,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:23:56,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:23:56,804 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:23:56,804 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:23:56,804 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:23:56,804 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:23:56,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:23:56,805 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:23:56,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:23:56,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:23:56 BoogieIcfgContainer [2019-11-19 23:23:56,815 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:23:56,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:23:56,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:23:56,818 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:23:56,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:23:55" (3/4) ... [2019-11-19 23:23:56,823 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:23:56,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:23:56,826 INFO L168 Benchmark]: Toolchain (without parser) took 1908.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.0 MB in the beginning and 926.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 149.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:23:56,828 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:23:56,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-19 23:23:56,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.02 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:23:56,835 INFO L168 Benchmark]: Boogie Preprocessor took 16.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:23:56,835 INFO L168 Benchmark]: RCFGBuilder took 187.47 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-19 23:23:56,836 INFO L168 Benchmark]: BuchiAutomizer took 1387.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.0 MB in the end (delta: 175.0 MB). Peak memory consumption was 175.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:23:56,836 INFO L168 Benchmark]: Witness Printer took 5.54 ms. Allocated memory is still 1.2 GB. Free memory is still 926.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:23:56,844 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.02 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.31 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 187.47 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: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1387.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.0 MB in the end (delta: 175.0 MB). Peak memory consumption was 175.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.54 ms. Allocated memory is still 1.2 GB. Free memory is still 926.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 5 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 13 SDslu, 12 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...