./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 32bit --witnessprinter.graph.data.programhash 67bb0790f696b3c18eb630bed2fc34fee971c82b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:47:31,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:47:31,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:47:31,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:47:31,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:47:31,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:47:31,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:47:31,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:47:31,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:47:31,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:47:31,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:47:31,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:47:31,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:47:31,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:47:31,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:47:31,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:47:31,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:47:31,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:47:31,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:47:31,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:47:31,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:47:31,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:47:31,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:47:31,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:47:31,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:47:31,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:47:31,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:47:31,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:47:31,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:47:31,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:47:31,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:47:31,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:47:31,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:47:31,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:47:31,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:47:31,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:47:31,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:47:31,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:47:31,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:47:31,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:47:31,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:47:31,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 05:47:31,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:47:31,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:47:31,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:47:31,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:47:31,749 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:47:31,749 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 05:47:31,749 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 05:47:31,750 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 05:47:31,750 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 05:47:31,750 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 05:47:31,750 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 05:47:31,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:47:31,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:47:31,751 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:47:31,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:47:31,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:47:31,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:47:31,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 05:47:31,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 05:47:31,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 05:47:31,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:47:31,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:47:31,753 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 05:47:31,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:47:31,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 05:47:31,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:47:31,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:47:31,754 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 05:47:31,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:47:31,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:47:31,755 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 05:47:31,756 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 05:47:31,756 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_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2019-11-20 05:47:31,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:47:31,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:47:31,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:47:31,948 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:47:31,949 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:47:31,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-20 05:47:32,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/data/92f0cba91/dd54e67933874a4cab8e8a2c85dab0fd/FLAG876d9d638 [2019-11-20 05:47:32,525 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:47:32,525 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-20 05:47:32,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/data/92f0cba91/dd54e67933874a4cab8e8a2c85dab0fd/FLAG876d9d638 [2019-11-20 05:47:32,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/data/92f0cba91/dd54e67933874a4cab8e8a2c85dab0fd [2019-11-20 05:47:32,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:47:32,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:47:32,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:47:32,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:47:32,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:47:32,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:32" (1/1) ... [2019-11-20 05:47:32,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5960e6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:32, skipping insertion in model container [2019-11-20 05:47:32,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:32" (1/1) ... [2019-11-20 05:47:32,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:47:32,900 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:47:33,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:47:33,120 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:47:33,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:47:33,235 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:47:33,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33 WrapperNode [2019-11-20 05:47:33,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:47:33,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:47:33,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:47:33,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:47:33,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:47:33,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:47:33,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:47:33,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:47:33,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... [2019-11-20 05:47:33,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:47:33,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:47:33,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:47:33,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:47:33,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 [2019-11-20 05:47:33,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:47:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:47:33,649 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:47:33,649 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 05:47:33,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:33 BoogieIcfgContainer [2019-11-20 05:47:33,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:47:33,651 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 05:47:33,651 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 05:47:33,654 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 05:47:33,655 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:47:33,655 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:47:32" (1/3) ... [2019-11-20 05:47:33,657 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7821c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:47:33, skipping insertion in model container [2019-11-20 05:47:33,657 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:47:33,657 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:33" (2/3) ... [2019-11-20 05:47:33,658 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7821c968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:47:33, skipping insertion in model container [2019-11-20 05:47:33,658 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:47:33,658 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:33" (3/3) ... [2019-11-20 05:47:33,660 INFO L371 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2019-11-20 05:47:33,723 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 05:47:33,724 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 05:47:33,724 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 05:47:33,724 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:47:33,725 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:47:33,725 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 05:47:33,726 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:47:33,726 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 05:47:33,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-20 05:47:33,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 05:47:33,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:47:33,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:47:33,781 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:47:33,781 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 05:47:33,781 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 05:47:33,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-20 05:47:33,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 05:47:33,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:47:33,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:47:33,790 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:47:33,790 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 05:47:33,800 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 14#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 7#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 15#L17-3true [2019-11-20 05:47:33,801 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 8#L18-2true assume !true; 4#L18-3true assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 5#L17-2true main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2019-11-20 05:47:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2019-11-20 05:47:33,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:33,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738367039] [2019-11-20 05:47:33,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:33,926 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:33,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1683322, now seen corresponding path program 1 times [2019-11-20 05:47:33,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:33,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012267169] [2019-11-20 05:47:33,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:33,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012267169] [2019-11-20 05:47:33,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:47:33,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:47:33,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592059044] [2019-11-20 05:47:33,971 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 05:47:33,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:47:33,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 05:47:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 05:47:33,988 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-20 05:47:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:47:33,995 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2019-11-20 05:47:33,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:47:33,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-20 05:47:33,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:47:34,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2019-11-20 05:47:34,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 05:47:34,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 05:47:34,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-20 05:47:34,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:47:34,005 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-20 05:47:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-20 05:47:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 05:47:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 05:47:34,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-20 05:47:34,033 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-20 05:47:34,034 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-20 05:47:34,034 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 05:47:34,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-20 05:47:34,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:47:34,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:47:34,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:47:34,036 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:47:34,036 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 05:47:34,037 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 42#L14 assume !!(main_~l~0 > 0); 39#L15 assume !!(main_~l~0 < 1000000); 40#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 38#L17-3 [2019-11-20 05:47:34,037 INFO L796 eck$LassoCheckResult]: Loop: 38#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 43#L18-2 assume !(main_~i~0 < main_~n~0); 36#L18-3 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 37#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 38#L17-3 [2019-11-20 05:47:34,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 2 times [2019-11-20 05:47:34,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:34,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160622982] [2019-11-20 05:47:34,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,053 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1668907, now seen corresponding path program 1 times [2019-11-20 05:47:34,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:34,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576965411] [2019-11-20 05:47:34,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,072 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1295853045, now seen corresponding path program 1 times [2019-11-20 05:47:34,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:34,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450856957] [2019-11-20 05:47:34,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:34,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:34,193 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:34,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:34,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:34,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:34,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:47:34,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:34,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:34,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:34,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-20 05:47:34,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:34,195 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:34,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:34,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:34,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:34,379 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:34,380 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:34,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:47:34,399 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 [2019-11-20 05:47:34,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:47:34,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:34,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:47:34,439 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:34,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:47:34,474 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 [2019-11-20 05:47:34,878 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:47:34,880 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:34,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:34,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:34,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:34,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:47:34,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:34,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:34,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:34,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-20 05:47:34,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:34,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:34,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:34,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:34,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:35,025 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:35,031 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 [2019-11-20 05:47:35,046 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 [2019-11-20 05:47:35,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:47:35,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:47:35,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:47:35,050 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 05:47:35,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:47:35,054 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 05:47:35,054 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:47:35,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 [2019-11-20 05:47:35,089 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 05:47:35,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:47:35,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:47:35,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:47:35,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:47:35,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:47:35,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:47:35,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:47:35,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:47:35,108 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:47:35,109 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:35,123 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:47:35,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:47:35,124 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:47:35,125 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-11-20 05:47:35,131 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:35,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:47:35,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:35,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:35,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:35,250 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 [2019-11-20 05:47:35,251 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 05:47:35,317 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2019-11-20 05:47:35,319 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 [2019-11-20 05:47:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:47:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-20 05:47:35,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 05:47:35,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-20 05:47:35,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-20 05:47:35,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2019-11-20 05:47:35,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:47:35,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2019-11-20 05:47:35,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 05:47:35,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 05:47:35,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2019-11-20 05:47:35,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:47:35,328 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-20 05:47:35,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2019-11-20 05:47:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-20 05:47:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 05:47:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-20 05:47:35,330 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-20 05:47:35,331 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-20 05:47:35,331 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 05:47:35,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2019-11-20 05:47:35,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:47:35,332 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:47:35,332 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:47:35,333 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 05:47:35,333 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:47:35,333 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 117#L14 assume !!(main_~l~0 > 0); 110#L15 assume !!(main_~l~0 < 1000000); 111#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 118#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 112#L18-2 [2019-11-20 05:47:35,334 INFO L796 eck$LassoCheckResult]: Loop: 112#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 113#L4 assume !(0 == __VERIFIER_assert_~cond); 119#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 112#L18-2 [2019-11-20 05:47:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,334 INFO L82 PathProgramCache]: Analyzing trace with hash 29742509, now seen corresponding path program 1 times [2019-11-20 05:47:35,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:35,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387399452] [2019-11-20 05:47:35,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,346 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 1 times [2019-11-20 05:47:35,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:35,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076882260] [2019-11-20 05:47:35,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,367 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854647, now seen corresponding path program 1 times [2019-11-20 05:47:35,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:35,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582475830] [2019-11-20 05:47:35,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:35,432 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:35,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:35,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:35,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:35,432 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:47:35,433 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:35,433 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:35,433 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:35,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-20 05:47:35,433 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:35,433 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:35,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:35,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:35,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:35,557 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:35,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:47:35,564 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:35,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:47:35,582 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:35,664 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:47:35,666 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:35,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:35,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:35,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:35,667 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:47:35,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:35,667 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:35,667 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:35,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-20 05:47:35,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:35,668 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:35,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:35,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:35,790 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:35,790 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:35,807 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 [2019-11-20 05:47:35,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:47:35,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:47:35,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:47:35,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:47:35,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:47:35,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:47:35,815 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 [2019-11-20 05:47:35,820 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:47:35,827 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 05:47:35,827 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 [2019-11-20 05:47:35,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:47:35,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:47:35,838 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:47:35,839 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 05:47:35,846 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:47:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:35,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:47:35,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:35,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:35,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:35,911 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 [2019-11-20 05:47:35,912 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-20 05:47:35,945 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2019-11-20 05:47:35,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 05:47:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:47:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 05:47:35,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 05:47:35,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 05:47:35,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-20 05:47:35,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:35,950 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2019-11-20 05:47:35,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:47:35,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 20 states and 26 transitions. [2019-11-20 05:47:35,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 05:47:35,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 05:47:35,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-11-20 05:47:35,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:47:35,957 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-20 05:47:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-11-20 05:47:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2019-11-20 05:47:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 05:47:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-20 05:47:35,960 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-20 05:47:35,960 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-20 05:47:35,960 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 05:47:35,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-11-20 05:47:35,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:47:35,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:47:35,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:47:35,962 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:47:35,963 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:47:35,963 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 211#L14 assume !!(main_~l~0 > 0); 200#L15 assume !!(main_~l~0 < 1000000); 201#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 209#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 207#L18-2 assume !(main_~i~0 < main_~n~0); 202#L18-3 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5; 203#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 205#L18-2 [2019-11-20 05:47:35,963 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 206#L4 assume !(0 == __VERIFIER_assert_~cond); 212#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-2 [2019-11-20 05:47:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740677, now seen corresponding path program 1 times [2019-11-20 05:47:35,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:35,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194547305] [2019-11-20 05:47:35,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,985 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:35,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 2 times [2019-11-20 05:47:35,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:35,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865405024] [2019-11-20 05:47:35,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:47:35,999 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:47:35,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:35,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2129380705, now seen corresponding path program 1 times [2019-11-20 05:47:36,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:47:36,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046943298] [2019-11-20 05:47:36,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:47:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:36,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046943298] [2019-11-20 05:47:36,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822893668] [2019-11-20 05:47:36,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:47:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:36,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:47:36,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-20 05:47:36,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747722722] [2019-11-20 05:47:36,173 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:36,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:36,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:36,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:36,173 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:47:36,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:36,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:36,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:36,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-20 05:47:36,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:36,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:36,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:36,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:36,284 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:36,284 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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 [2019-11-20 05:47:36,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:47:36,295 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:47:36,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:47:36,323 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:36,497 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:47:36,500 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:47:36,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:47:36,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:47:36,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:47:36,501 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:47:36,501 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:36,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:47:36,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:47:36,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-20 05:47:36,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:47:36,503 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:47:36,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:36,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:47:36,613 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:47:36,613 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:47:36,631 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 [2019-11-20 05:47:36,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:47:36,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:47:36,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:47:36,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:47:36,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:47:36,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:47:36,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:36,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/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) [2019-11-20 05:47:36,657 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 [2019-11-20 05:47:36,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:47:36,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:47:36,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:47:36,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:47:36,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:47:36,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:47:36,666 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 [2019-11-20 05:47:36,670 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:47:36,675 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:47:36,675 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e2f2549-e9bf-4615-bca0-dd343d4271a3/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:47:36,689 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:47:36,689 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:47:36,689 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:47:36,690 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-20 05:47:36,693 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:47:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:36,767 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 [2019-11-20 05:47:36,767 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 05:47:36,796 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-20 05:47:36,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 05:47:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:47:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 05:47:36,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:47:36,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:36,799 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:47:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:36,852 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:47:36,852 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 05:47:36,868 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-20 05:47:36,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 05:47:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:47:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 05:47:36,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:47:36,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:36,870 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:47:36,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:47:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:47:36,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:47:36,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:47:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:47:36,916 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:47:36,916 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 05:47:36,942 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2019-11-20 05:47:36,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 05:47:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:47:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-20 05:47:36,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:47:36,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:36,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 05:47:36,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:36,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-20 05:47:36,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:47:36,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2019-11-20 05:47:36,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:47:36,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-20 05:47:36,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 05:47:36,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 05:47:36,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 05:47:36,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:47:36,949 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:47:36,949 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:47:36,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:47:36,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:47:36,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:47:36,950 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2019-11-20 05:47:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:47:36,950 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 05:47:36,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 05:47:36,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 05:47:36,951 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:47:36,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 05:47:36,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 05:47:36,952 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 05:47:36,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 05:47:36,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 05:47:36,953 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:47:36,953 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:47:36,953 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 05:47:36,953 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 05:47:36,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 05:47:36,954 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 05:47:36,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 05:47:36,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 05:47:36 BoogieIcfgContainer [2019-11-20 05:47:36,960 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 05:47:36,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:47:36,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:47:36,961 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:47:36,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:33" (3/4) ... [2019-11-20 05:47:36,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 05:47:36,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:47:36,967 INFO L168 Benchmark]: Toolchain (without parser) took 4100.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 950.0 MB in the beginning and 860.6 MB in the end (delta: 89.4 MB). Peak memory consumption was 240.4 MB. Max. memory is 11.5 GB. [2019-11-20 05:47:36,968 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:47:36,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -196.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:47:36,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.97 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. [2019-11-20 05:47:36,969 INFO L168 Benchmark]: Boogie Preprocessor took 22.88 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. [2019-11-20 05:47:36,970 INFO L168 Benchmark]: RCFGBuilder took 348.37 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-11-20 05:47:36,970 INFO L168 Benchmark]: BuchiAutomizer took 3309.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.6 MB in the end (delta: 259.6 MB). Peak memory consumption was 259.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:47:36,971 INFO L168 Benchmark]: Witness Printer took 4.68 ms. Allocated memory is still 1.2 GB. Free memory is still 860.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:47:36,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -196.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.97 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 22.88 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 348.37 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3309.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 860.6 MB in the end (delta: 259.6 MB). Peak memory consumption was 259.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.68 ms. Allocated memory is still 1.2 GB. Free memory is still 860.6 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 70 SDtfs, 66 SDslu, 28 SDs, 0 SdLazy, 41 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp71 dnf97 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...