./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c -s /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cf6b3a74fd4060a216a178ad3d11a901c2ac840d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:30,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:30,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:30,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:30,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:30,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:30,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:30,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:30,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:30,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:30,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:30,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:30,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:30,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:30,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:30,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:30,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:30,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:30,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:30,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:30,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:30,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:30,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:30,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:30,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:30,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:30,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:30,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:30,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:30,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:30,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:30,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:30,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:30,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:30,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:30,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:30,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:30,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:30,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:30,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:30,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:30,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:30,805 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:30,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:30,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:30,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:30,806 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:30,806 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:30,806 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:30,806 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:30,807 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:30,807 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:30,807 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:30,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:30,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:30,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:30,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:30,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:30,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:30,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:30,809 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:30,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:30,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:30,810 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:30,811 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:30,811 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf6b3a74fd4060a216a178ad3d11a901c2ac840d [2019-10-22 08:56:30,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:30,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:30,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:30,853 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:30,855 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:30,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2019-10-22 08:56:30,901 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/data/42c5f5472/f3b21077533f4093ba72c39f5479bf20/FLAG3d3c325b5 [2019-10-22 08:56:31,262 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:31,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2019-10-22 08:56:31,267 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/data/42c5f5472/f3b21077533f4093ba72c39f5479bf20/FLAG3d3c325b5 [2019-10-22 08:56:31,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/data/42c5f5472/f3b21077533f4093ba72c39f5479bf20 [2019-10-22 08:56:31,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:31,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:31,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:31,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:31,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:31,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458dbaf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,298 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:31,310 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:31,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:31,423 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:31,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:31,503 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:31,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31 WrapperNode [2019-10-22 08:56:31,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:31,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:31,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:31,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:31,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:31,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:31,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:31,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:31,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... [2019-10-22 08:56:31,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:31,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:31,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:31,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:31,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:31,759 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:31,759 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:56:31,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31 BoogieIcfgContainer [2019-10-22 08:56:31,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:31,761 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:31,762 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:31,765 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:31,767 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:31,767 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:31" (1/3) ... [2019-10-22 08:56:31,768 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aacf6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,768 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:31,768 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:31" (2/3) ... [2019-10-22 08:56:31,769 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aacf6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:31, skipping insertion in model container [2019-10-22 08:56:31,769 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:31,769 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31" (3/3) ... [2019-10-22 08:56:31,770 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.09-no-inv_assume.c [2019-10-22 08:56:31,813 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:31,814 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:31,814 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:31,814 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:31,814 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:31,814 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:31,814 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:31,814 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:31,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:56:31,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:31,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:31,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:31,853 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:56:31,853 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:31,853 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:31,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:56:31,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:31,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:31,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:31,854 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:56:31,854 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:31,861 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11true assume main_~x~0 > 0 && main_~y~0 > 0; 3#L12-2true [2019-10-22 08:56:31,861 INFO L793 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(0 == main_~x~0); 10#L13true assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 8#L13-2true main_~c~0 := 1 + main_~c~0; 3#L12-2true [2019-10-22 08:56:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:31,866 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 08:56:31,873 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:31,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119856793] [2019-10-22 08:56:31,874 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,874 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,964 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash 42800, now seen corresponding path program 1 times [2019-10-22 08:56:31,966 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:31,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079043149] [2019-10-22 08:56:31,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,977 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:31,978 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 1 times [2019-10-22 08:56:31,978 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:31,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854699057] [2019-10-22 08:56:31,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,979 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:31,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:31,992 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:32,039 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:32,039 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:32,040 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:32,040 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:32,040 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:32,040 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,040 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:32,040 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:32,040 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2019-10-22 08:56:32,041 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:32,041 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:32,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,182 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:32,182 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:32,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:32,188 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 [2019-10-22 08:56:32,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:32,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:32,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:32,266 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:32,266 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:32,271 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:32,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:32,280 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:32,295 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:32,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:32,301 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:32,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:32,314 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,472 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:32,474 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:32,474 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:32,474 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:32,474 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:32,475 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:32,475 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,475 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:32,475 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:32,475 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration1_Loop [2019-10-22 08:56:32,475 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:32,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:32,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,609 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:32,615 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:32,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:32,618 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:32,619 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:32,619 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:32,619 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:32,625 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:32,628 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:32,632 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:32,632 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:32,633 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:32,633 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:32,634 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:32,634 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:32,636 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:32,636 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:32,643 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:32,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:32,644 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:32,644 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:32,645 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:32,645 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:32,645 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:32,646 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:32,646 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:32,651 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:32,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:32,652 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:32,652 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:32,652 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:32,652 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:56:32,652 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:32,653 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 08:56:32,654 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:32,672 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:32,684 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:56:32,684 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:56:32,686 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:32,686 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:32,687 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:32,687 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-10-22 08:56:32,690 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:32,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:32,735 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:32,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:32,784 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 [2019-10-22 08:56:32,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-10-22 08:56:32,832 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 29 states and 36 transitions. Complement of second has 5 states. [2019-10-22 08:56:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:32,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2019-10-22 08:56:32,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:56:32,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:32,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:56:32,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:32,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:56:32,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:32,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2019-10-22 08:56:32,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:32,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2019-10-22 08:56:32,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:56:32,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:56:32,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2019-10-22 08:56:32,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:32,852 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-10-22 08:56:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2019-10-22 08:56:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 08:56:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:56:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-10-22 08:56:32,876 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 08:56:32,876 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-10-22 08:56:32,876 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:32,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-10-22 08:56:32,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:32,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:32,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:32,877 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:56:32,877 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:32,877 INFO L791 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 82#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 83#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2019-10-22 08:56:32,877 INFO L793 eck$LassoCheckResult]: Loop: 78#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 84#L13-2 main_~c~0 := 1 + main_~c~0; 77#L12-2 assume !!!(0 == main_~x~0); 78#L13 [2019-10-22 08:56:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-10-22 08:56:32,878 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380089861] [2019-10-22 08:56:32,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,888 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,891 INFO L82 PathProgramCache]: Analyzing trace with hash 47722, now seen corresponding path program 1 times [2019-10-22 08:56:32,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809332568] [2019-10-22 08:56:32,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,899 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 920232130, now seen corresponding path program 1 times [2019-10-22 08:56:32,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:32,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972410863] [2019-10-22 08:56:32,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:32,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:32,915 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:32,939 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:32,939 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:32,939 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:32,940 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:32,940 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:32,940 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:32,940 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:32,940 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:32,940 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Loop [2019-10-22 08:56:32,940 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:32,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:32,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:32,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:33,030 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:33,040 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,040 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:33,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,048 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:33,061 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,164 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:33,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:33,210 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,226 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-10-22 08:56:33,250 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:33,251 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:33,251 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:33,251 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:33,251 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:33,251 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,251 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:33,251 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:33,251 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2019-10-22 08:56:33,251 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:33,251 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:33,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,363 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:33,363 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:33,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,371 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 [2019-10-22 08:56:33,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:33,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,395 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,400 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/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) [2019-10-22 08:56:33,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,411 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:33,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,422 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,430 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:33,442 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:33,466 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:33,466 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:33,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:33,473 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:33,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:33,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:33,600 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:33,600 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:33,600 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:33,600 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:33,600 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:33,600 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:33,600 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:33,600 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:33,600 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration2_Lasso [2019-10-22 08:56:33,600 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:33,601 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:33,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:33,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:33,701 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:33,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,702 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,702 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:33,703 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,703 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,703 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,703 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:33,703 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:33,705 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,705 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,706 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:33,706 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,706 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,706 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,706 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:33,707 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:33,707 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,708 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,708 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:33,708 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,708 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,709 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,709 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:33,709 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:33,710 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,710 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,710 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,711 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,711 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,711 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,712 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:33,712 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:33,715 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,716 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,716 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,716 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,716 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,718 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:33,718 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:33,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,729 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,729 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,729 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:33,729 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,731 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:33,731 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:33,735 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:33,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:33,736 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:33,736 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:33,736 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:56:33,737 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:33,744 INFO L400 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-10-22 08:56:33,744 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-10-22 08:56:33,871 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:33,921 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-10-22 08:56:33,921 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 4 variables to zero. [2019-10-22 08:56:33,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:33,924 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-10-22 08:56:33,936 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:33,936 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 - 1 >= 0] [2019-10-22 08:56:33,942 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:56:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:33,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:33,988 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:33,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,003 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-10-22 08:56:34,004 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-10-22 08:56:34,041 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 21 transitions. Complement of second has 5 states. [2019-10-22 08:56:34,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 0 non-accepting loop states 2 accepting loop states [2019-10-22 08:56:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-10-22 08:56:34,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:56:34,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,044 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:56:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,078 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,090 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2019-10-22 08:56:34,090 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-10-22 08:56:34,122 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 21 states and 26 transitions. Complement of second has 6 states. [2019-10-22 08:56:34,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-10-22 08:56:34,123 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:56:34,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:56:34,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:56:34,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-10-22 08:56:34,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:34,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 13 states and 16 transitions. [2019-10-22 08:56:34,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:56:34,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:56:34,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2019-10-22 08:56:34,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:34,126 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-10-22 08:56:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2019-10-22 08:56:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-10-22 08:56:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:56:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-10-22 08:56:34,127 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-10-22 08:56:34,127 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-10-22 08:56:34,127 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:56:34,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-10-22 08:56:34,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:34,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:34,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:34,128 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:34,128 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:34,128 INFO L791 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 208#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 204#L12-2 assume !!!(0 == main_~x~0); 205#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 213#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2019-10-22 08:56:34,128 INFO L793 eck$LassoCheckResult]: Loop: 210#L12-2 assume !!!(0 == main_~x~0); 212#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 209#L13-2 main_~c~0 := 1 + main_~c~0; 210#L12-2 [2019-10-22 08:56:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29684845, now seen corresponding path program 2 times [2019-10-22 08:56:34,131 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106954066] [2019-10-22 08:56:34,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,131 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,147 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 2 times [2019-10-22 08:56:34,150 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256012627] [2019-10-22 08:56:34,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,157 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash -422032510, now seen corresponding path program 1 times [2019-10-22 08:56:34,157 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668046363] [2019-10-22 08:56:34,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,158 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,171 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,186 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:34,186 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:34,186 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:34,186 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:34,186 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:34,187 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,187 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:34,187 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:34,187 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Loop [2019-10-22 08:56:34,187 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:34,187 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:34,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,253 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:34,253 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:34,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,262 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:34,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,278 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,289 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,293 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:34,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Honda state: {ULTIMATE.start_main_~y~0=-8, ULTIMATE.start_main_~x~0=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [10, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:34,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,333 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,337 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2019-10-22 08:56:34,371 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:34,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:34,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:34,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:34,372 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:34,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,372 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:34,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:34,372 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2019-10-22 08:56:34,372 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:34,372 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:34,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,476 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:34,476 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:34,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,480 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,484 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,484 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,493 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,493 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,514 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:34,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,521 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:34,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,539 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:34,539 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:34,544 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:34,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:34,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:34,586 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:34,586 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:34,586 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:34,586 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:34,586 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:34,586 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:34,586 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:34,586 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:34,586 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration3_Lasso [2019-10-22 08:56:34,586 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:34,586 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:34,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:34,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:34,672 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:34,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,673 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,673 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:34,673 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,673 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:34,673 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,673 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:34,673 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:34,674 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:34,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,674 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,675 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:34,675 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,675 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:34,675 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,675 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:34,675 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:34,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:34,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,676 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,676 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:34,676 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,676 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:34,677 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,677 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:34,677 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:34,677 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:34,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,678 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,678 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,678 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:34,678 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,679 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:34,679 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:34,690 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:34,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,692 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,693 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,693 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:34,693 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,694 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:34,696 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:34,697 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:34,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:34,698 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:34,698 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:34,698 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:56:34,698 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:34,704 INFO L400 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-10-22 08:56:34,705 INFO L401 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-10-22 08:56:34,781 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:34,804 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-10-22 08:56:34,809 INFO L444 ModelExtractionUtils]: 11 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-10-22 08:56:34,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:34,811 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-10-22 08:56:34,811 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:34,811 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~x~0 >= 0] [2019-10-22 08:56:34,813 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:56:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,860 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:34,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,882 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2019-10-22 08:56:34,882 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2019-10-22 08:56:34,933 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 28 states and 35 transitions. Complement of second has 10 states. [2019-10-22 08:56:34,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 2 accepting loop states [2019-10-22 08:56:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:56:34,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2019-10-22 08:56:34,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:56:34,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-10-22 08:56:34,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2019-10-22 08:56:34,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:34,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-10-22 08:56:34,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:34,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 24 transitions. [2019-10-22 08:56:34,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:56:34,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:56:34,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 24 transitions. [2019-10-22 08:56:34,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:34,936 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-10-22 08:56:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 24 transitions. [2019-10-22 08:56:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 11. [2019-10-22 08:56:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:56:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-10-22 08:56:34,937 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:56:34,937 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:56:34,937 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:56:34,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-10-22 08:56:34,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:34,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:34,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:34,938 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-10-22 08:56:34,938 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:34,938 INFO L791 eck$LassoCheckResult]: Stem: 315#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 316#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 311#L12-2 assume !!!(0 == main_~x~0); 312#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 319#L13-2 main_~c~0 := 1 + main_~c~0; 313#L12-2 assume !!!(0 == main_~x~0); 314#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 321#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2019-10-22 08:56:34,939 INFO L793 eck$LassoCheckResult]: Loop: 318#L12-2 assume !!!(0 == main_~x~0); 320#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 317#L13-2 main_~c~0 := 1 + main_~c~0; 318#L12-2 [2019-10-22 08:56:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,939 INFO L82 PathProgramCache]: Analyzing trace with hash -420185530, now seen corresponding path program 2 times [2019-10-22 08:56:34,939 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779710897] [2019-10-22 08:56:34,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779710897] [2019-10-22 08:56:34,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:34,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:34,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079953349] [2019-10-22 08:56:34,982 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:56:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 3 times [2019-10-22 08:56:34,982 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048088655] [2019-10-22 08:56:34,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,989 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,005 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:35,005 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:35,005 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:35,005 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:35,005 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:35,006 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,006 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:35,006 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:35,006 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration4_Loop [2019-10-22 08:56:35,006 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:35,006 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:35,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,069 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:35,069 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,073 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,082 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,107 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,110 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,110 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,117 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,125 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,133 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,146 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,146 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-10-22 08:56:35,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:35,151 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:56:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,170 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2019-10-22 08:56:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:35,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-10-22 08:56:35,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:35,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 14 transitions. [2019-10-22 08:56:35,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:56:35,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:56:35,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-10-22 08:56:35,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:35,172 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-22 08:56:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-10-22 08:56:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-10-22 08:56:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:56:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-10-22 08:56:35,173 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 08:56:35,174 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 08:56:35,174 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:56:35,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-10-22 08:56:35,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:35,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:35,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:35,174 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2019-10-22 08:56:35,174 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:35,175 INFO L791 eck$LassoCheckResult]: Stem: 348#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 349#L11 assume main_~x~0 > 0 && main_~y~0 > 0; 344#L12-2 assume !!!(0 == main_~x~0); 345#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 352#L13-2 main_~c~0 := 1 + main_~c~0; 346#L12-2 assume !!!(0 == main_~x~0); 347#L13 assume main_~x~0 > main_~y~0;main_~x~0 := main_~y~0; 354#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2019-10-22 08:56:35,175 INFO L793 eck$LassoCheckResult]: Loop: 351#L12-2 assume !!!(0 == main_~x~0); 353#L13 assume !(main_~x~0 > main_~y~0);main_~x~0 := main_~x~0 - 1; 350#L13-2 main_~c~0 := 1 + main_~c~0; 351#L12-2 [2019-10-22 08:56:35,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,175 INFO L82 PathProgramCache]: Analyzing trace with hash -422032572, now seen corresponding path program 3 times [2019-10-22 08:56:35,175 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071770924] [2019-10-22 08:56:35,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071770924] [2019-10-22 08:56:35,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:35,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:35,192 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794515817] [2019-10-22 08:56:35,193 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:56:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 4 times [2019-10-22 08:56:35,193 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974941749] [2019-10-22 08:56:35,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,197 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,216 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:35,216 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:35,217 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:35,217 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:35,217 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:35,217 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,217 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:35,217 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:35,217 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.09-no-inv_assume.c_Iteration5_Loop [2019-10-22 08:56:35,217 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:35,217 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:35,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,284 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:35,284 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,292 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,296 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,296 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,302 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,311 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_~x~0=0}] Lambdas: [11, 1, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:35,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,354 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,372 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_575cd467-3514-4bd4-b82f-8aa8d0da4e0a/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:35,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,390 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] [2019-10-22 08:56:35,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:35,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:35,393 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-10-22 08:56:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,398 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-22 08:56:35,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:35,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 6 transitions. [2019-10-22 08:56:35,399 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:35,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 0 states and 0 transitions. [2019-10-22 08:56:35,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:56:35,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:56:35,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:56:35,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:35,399 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:35,399 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:35,399 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:35,400 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:56:35,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:35,400 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:35,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:56:35,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:35 BoogieIcfgContainer [2019-10-22 08:56:35,405 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:35,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:35,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:35,406 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:35,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:31" (3/4) ... [2019-10-22 08:56:35,409 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:56:35,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:35,411 INFO L168 Benchmark]: Toolchain (without parser) took 4126.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.4 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -223.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,411 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:35,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,412 INFO L168 Benchmark]: Boogie Preprocessor took 17.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,412 INFO L168 Benchmark]: RCFGBuilder took 208.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:35,413 INFO L168 Benchmark]: BuchiAutomizer took 3643.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,413 INFO L168 Benchmark]: Witness Printer took 3.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:35,415 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 218.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.18 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 208.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3643.96 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -57.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 3. Nontrivial modules had stage [2, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 23 SDslu, 12 SDs, 0 SdLazy, 43 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax154 hnf97 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf95 smp100 dnf157 smp100 tf103 neg94 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 200ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 11 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...