./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 0baccb6c9a05802d446420fb16b8e65dc76eab5e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:09:10,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:09:10,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:09:10,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:09:10,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:09:10,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:09:10,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:09:10,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:09:10,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:09:10,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:09:10,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:09:10,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:09:10,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:09:10,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:09:10,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:09:10,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:09:10,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:09:10,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:09:10,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:09:10,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:09:10,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:09:10,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:09:10,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:09:10,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:09:10,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:09:10,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:09:10,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:09:10,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:09:10,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:09:10,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:09:10,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:09:10,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:09:10,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:09:10,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:09:10,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:09:10,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:09:10,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:09:10,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:09:10,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:09:10,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:09:10,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:09:10,782 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 12:09:10,792 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:09:10,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:09:10,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:09:10,793 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 12:09:10,793 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 12:09:10,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 12:09:10,794 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:09:10,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 12:09:10,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:09:10,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:09:10,795 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 12:09:10,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:09:10,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:09:10,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:09:10,796 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 12:09:10,796 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 12:09:10,796 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 -> 0baccb6c9a05802d446420fb16b8e65dc76eab5e [2019-12-07 12:09:10,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:09:10,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:09:10,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:09:10,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:09:10,908 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:09:10,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-12-07 12:09:10,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/data/0b9b0e4a0/19776bfa71ed4979b7e838b8e8d0944d/FLAG7096e1f9a [2019-12-07 12:09:11,373 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:09:11,374 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-12-07 12:09:11,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/data/0b9b0e4a0/19776bfa71ed4979b7e838b8e8d0944d/FLAG7096e1f9a [2019-12-07 12:09:11,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/data/0b9b0e4a0/19776bfa71ed4979b7e838b8e8d0944d [2019-12-07 12:09:11,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:09:11,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:09:11,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:09:11,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:09:11,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:09:11,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446e037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11, skipping insertion in model container [2019-12-07 12:09:11,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:09:11,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:09:11,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:09:11,509 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:09:11,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:09:11,559 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:09:11,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11 WrapperNode [2019-12-07 12:09:11,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:09:11,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:09:11,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:09:11,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:09:11,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:09:11,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:09:11,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:09:11,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:09:11,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... [2019-12-07 12:09:11,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:09:11,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:09:11,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:09:11,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:09:11,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:09:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:09:11,719 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:09:11,719 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 12:09:11,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:09:11 BoogieIcfgContainer [2019-12-07 12:09:11,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:09:11,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 12:09:11,720 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 12:09:11,722 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 12:09:11,723 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:09:11,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:09:11" (1/3) ... [2019-12-07 12:09:11,724 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4eb3226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:09:11, skipping insertion in model container [2019-12-07 12:09:11,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:09:11,724 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:09:11" (2/3) ... [2019-12-07 12:09:11,724 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4eb3226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:09:11, skipping insertion in model container [2019-12-07 12:09:11,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:09:11,724 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:09:11" (3/3) ... [2019-12-07 12:09:11,725 INFO L371 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2019-12-07 12:09:11,754 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 12:09:11,754 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 12:09:11,754 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 12:09:11,754 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:09:11,754 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:09:11,755 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 12:09:11,755 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:09:11,755 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 12:09:11,763 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 12:09:11,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 12:09:11,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:11,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:11,780 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:11,780 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 12:09:11,780 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 12:09:11,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 12:09:11,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 12:09:11,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:11,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:11,781 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:11,781 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 12:09:11,786 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 7#L10-2true [2019-12-07 12:09:11,786 INFO L796 eck$LassoCheckResult]: Loop: 7#L10-2true assume !!(main_~i~0 < 10);main_~j~0 := 3; 3#L12-2true assume !(main_~j~0 < 12); 10#L12-3true main_~i~0 := 1 + main_~i~0; 7#L10-2true [2019-12-07 12:09:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 12:09:11,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:11,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918631250] [2019-12-07 12:09:11,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:11,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 12:09:11,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:11,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431390360] [2019-12-07 12:09:11,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:11,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431390360] [2019-12-07 12:09:11,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:09:11,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:09:11,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251856619] [2019-12-07 12:09:11,895 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:11,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:09:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:09:11,907 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-12-07 12:09:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:11,922 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-12-07 12:09:11,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:09:11,924 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-12-07 12:09:11,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:09:11,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2019-12-07 12:09:11,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 12:09:11,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 12:09:11,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2019-12-07 12:09:11,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:11,928 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 12:09:11,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2019-12-07 12:09:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-12-07 12:09:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:09:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2019-12-07 12:09:11,945 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 12:09:11,945 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 12:09:11,945 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 12:09:11,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2019-12-07 12:09:11,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:09:11,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:11,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:11,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:11,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 12:09:11,946 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 29#L10-2 [2019-12-07 12:09:11,946 INFO L796 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 26#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 12); 30#L12-3 main_~i~0 := 1 + main_~i~0; 29#L10-2 [2019-12-07 12:09:11,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:11,947 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 12:09:11,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:11,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170579785] [2019-12-07 12:09:11,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:11,951 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:11,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:11,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2019-12-07 12:09:11,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:11,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49323218] [2019-12-07 12:09:11,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:11,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49323218] [2019-12-07 12:09:11,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248647706] [2019-12-07 12:09:11,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:11,999 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:09:11,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 12:09:12,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17814074] [2019-12-07 12:09:12,011 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:09:12,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:09:12,011 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-12-07 12:09:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,023 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2019-12-07 12:09:12,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:09:12,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2019-12-07 12:09:12,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 12:09:12,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 12:09:12,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 12:09:12,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 12:09:12,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-12-07 12:09:12,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,025 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 12:09:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-12-07 12:09:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 12:09:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 12:09:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 12:09:12,026 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 12:09:12,026 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 12:09:12,026 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 12:09:12,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-12-07 12:09:12,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 12:09:12,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,027 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,027 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2019-12-07 12:09:12,027 INFO L794 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 56#L10-2 [2019-12-07 12:09:12,027 INFO L796 eck$LassoCheckResult]: Loop: 56#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 53#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 54#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 58#L12-2 assume !(main_~j~0 < 12); 57#L12-3 main_~i~0 := 1 + main_~i~0; 56#L10-2 [2019-12-07 12:09:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-12-07 12:09:12,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327502473] [2019-12-07 12:09:12,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,032 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,032 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2019-12-07 12:09:12,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710722157] [2019-12-07 12:09:12,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710722157] [2019-12-07 12:09:12,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388006227] [2019-12-07 12:09:12,058 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,077 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:09:12,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,078 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,078 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 12:09:12,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833458571] [2019-12-07 12:09:12,082 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:09:12,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:09:12,082 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-12-07 12:09:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,092 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-12-07 12:09:12,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:09:12,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-12-07 12:09:12,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:09:12,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2019-12-07 12:09:12,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 12:09:12,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 12:09:12,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-12-07 12:09:12,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,093 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 12:09:12,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-12-07 12:09:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 12:09:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 12:09:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-12-07 12:09:12,094 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 12:09:12,094 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 12:09:12,094 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 12:09:12,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-12-07 12:09:12,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 12:09:12,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,095 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,095 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2019-12-07 12:09:12,095 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 89#L10-2 [2019-12-07 12:09:12,095 INFO L796 eck$LassoCheckResult]: Loop: 89#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 86#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 87#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 92#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 91#L12-2 assume !(main_~j~0 < 12); 90#L12-3 main_~i~0 := 1 + main_~i~0; 89#L10-2 [2019-12-07 12:09:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,095 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2019-12-07 12:09:12,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169800424] [2019-12-07 12:09:12,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,099 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2019-12-07 12:09:12,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,100 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902130129] [2019-12-07 12:09:12,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902130129] [2019-12-07 12:09:12,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696138238] [2019-12-07 12:09:12,131 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 12:09:12,155 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,156 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 12:09:12,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660631748] [2019-12-07 12:09:12,161 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:09:12,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:09:12,162 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-12-07 12:09:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,174 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-12-07 12:09:12,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:09:12,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-12-07 12:09:12,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 12:09:12,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2019-12-07 12:09:12,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 12:09:12,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 12:09:12,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-12-07 12:09:12,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,176 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 12:09:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-12-07 12:09:12,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 12:09:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 12:09:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-12-07 12:09:12,177 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 12:09:12,177 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 12:09:12,177 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 12:09:12,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-12-07 12:09:12,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 12:09:12,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,179 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,179 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2019-12-07 12:09:12,179 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 128#L10-2 [2019-12-07 12:09:12,179 INFO L796 eck$LassoCheckResult]: Loop: 128#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 125#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 126#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 132#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 131#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 130#L12-2 assume !(main_~j~0 < 12); 129#L12-3 main_~i~0 := 1 + main_~i~0; 128#L10-2 [2019-12-07 12:09:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,179 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2019-12-07 12:09:12,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185709739] [2019-12-07 12:09:12,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,184 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2019-12-07 12:09:12,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097313014] [2019-12-07 12:09:12,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097313014] [2019-12-07 12:09:12,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279832531] [2019-12-07 12:09:12,225 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,243 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 12:09:12,243 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,244 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,244 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 12:09:12,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333053066] [2019-12-07 12:09:12,249 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:09:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:09:12,249 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 7 states. [2019-12-07 12:09:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,262 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-12-07 12:09:12,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 12:09:12,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-12-07 12:09:12,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 12:09:12,263 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2019-12-07 12:09:12,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-12-07 12:09:12,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-12-07 12:09:12,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2019-12-07 12:09:12,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,263 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 12:09:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2019-12-07 12:09:12,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 12:09:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 12:09:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-12-07 12:09:12,264 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 12:09:12,265 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 12:09:12,265 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 12:09:12,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2019-12-07 12:09:12,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 12:09:12,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,265 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,265 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2019-12-07 12:09:12,265 INFO L794 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 173#L10-2 [2019-12-07 12:09:12,266 INFO L796 eck$LassoCheckResult]: Loop: 173#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 170#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 171#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 178#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 177#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 176#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 175#L12-2 assume !(main_~j~0 < 12); 174#L12-3 main_~i~0 := 1 + main_~i~0; 173#L10-2 [2019-12-07 12:09:12,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,266 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2019-12-07 12:09:12,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976830733] [2019-12-07 12:09:12,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,269 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2019-12-07 12:09:12,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131956058] [2019-12-07 12:09:12,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131956058] [2019-12-07 12:09:12,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52750894] [2019-12-07 12:09:12,306 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,325 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-07 12:09:12,326 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,326 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 12:09:12,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434995154] [2019-12-07 12:09:12,333 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 12:09:12,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 12:09:12,334 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 8 states. [2019-12-07 12:09:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,350 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-12-07 12:09:12,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:09:12,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2019-12-07 12:09:12,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 12:09:12,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 12:09:12,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 12:09:12,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 12:09:12,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2019-12-07 12:09:12,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,352 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 12:09:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2019-12-07 12:09:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 12:09:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 12:09:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 12:09:12,354 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 12:09:12,354 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 12:09:12,354 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 12:09:12,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2019-12-07 12:09:12,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 12:09:12,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,355 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,355 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2019-12-07 12:09:12,355 INFO L794 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 224#L10-2 [2019-12-07 12:09:12,355 INFO L796 eck$LassoCheckResult]: Loop: 224#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 221#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 222#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 230#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 229#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 228#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 227#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 226#L12-2 assume !(main_~j~0 < 12); 225#L12-3 main_~i~0 := 1 + main_~i~0; 224#L10-2 [2019-12-07 12:09:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2019-12-07 12:09:12,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756483243] [2019-12-07 12:09:12,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,360 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2019-12-07 12:09:12,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575043338] [2019-12-07 12:09:12,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575043338] [2019-12-07 12:09:12,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481312543] [2019-12-07 12:09:12,411 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,428 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-12-07 12:09:12,428 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,429 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 12:09:12,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309813870] [2019-12-07 12:09:12,434 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 12:09:12,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 12:09:12,435 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 9 states. [2019-12-07 12:09:12,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,447 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-12-07 12:09:12,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:09:12,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2019-12-07 12:09:12,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 12:09:12,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2019-12-07 12:09:12,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 12:09:12,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 12:09:12,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2019-12-07 12:09:12,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,448 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 12:09:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2019-12-07 12:09:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 12:09:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:09:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-12-07 12:09:12,449 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 12:09:12,449 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 12:09:12,449 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 12:09:12,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-12-07 12:09:12,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 12:09:12,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,450 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,450 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2019-12-07 12:09:12,450 INFO L794 eck$LassoCheckResult]: Stem: 280#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 281#L10-2 [2019-12-07 12:09:12,450 INFO L796 eck$LassoCheckResult]: Loop: 281#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 278#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 279#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 288#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 287#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 286#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 285#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 284#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 283#L12-2 assume !(main_~j~0 < 12); 282#L12-3 main_~i~0 := 1 + main_~i~0; 281#L10-2 [2019-12-07 12:09:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,450 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2019-12-07 12:09:12,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560273706] [2019-12-07 12:09:12,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2019-12-07 12:09:12,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351753753] [2019-12-07 12:09:12,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351753753] [2019-12-07 12:09:12,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650874940] [2019-12-07 12:09:12,503 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,520 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 12:09:12,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858586730] [2019-12-07 12:09:12,526 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 12:09:12,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 12:09:12,526 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 10 states. [2019-12-07 12:09:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,541 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-07 12:09:12,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 12:09:12,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2019-12-07 12:09:12,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-12-07 12:09:12,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 12:09:12,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 12:09:12,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 12:09:12,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-12-07 12:09:12,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,543 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 12:09:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-12-07 12:09:12,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 12:09:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 12:09:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 12:09:12,544 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 12:09:12,544 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 12:09:12,544 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-12-07 12:09:12,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-12-07 12:09:12,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-12-07 12:09:12,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,544 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,544 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2019-12-07 12:09:12,545 INFO L794 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 344#L10-2 [2019-12-07 12:09:12,545 INFO L796 eck$LassoCheckResult]: Loop: 344#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 341#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 342#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 352#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 351#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 350#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 349#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 348#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 347#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 346#L12-2 assume !(main_~j~0 < 12); 345#L12-3 main_~i~0 := 1 + main_~i~0; 344#L10-2 [2019-12-07 12:09:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,545 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2019-12-07 12:09:12,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822044718] [2019-12-07 12:09:12,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,547 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2019-12-07 12:09:12,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531695400] [2019-12-07 12:09:12,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531695400] [2019-12-07 12:09:12,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196967742] [2019-12-07 12:09:12,608 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:09:12,627 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 12:09:12,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 12:09:12,628 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 12:09:12,629 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:12,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:09:12,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 12:09:12,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452114939] [2019-12-07 12:09:12,635 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 12:09:12,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:09:12,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 12:09:12,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:09:12,635 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 11 states. [2019-12-07 12:09:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:09:12,654 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 12:09:12,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 12:09:12,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2019-12-07 12:09:12,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 12:09:12,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2019-12-07 12:09:12,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 12:09:12,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 12:09:12,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-12-07 12:09:12,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:12,656 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-12-07 12:09:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-12-07 12:09:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 12:09:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 12:09:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-12-07 12:09:12,657 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-12-07 12:09:12,657 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-12-07 12:09:12,657 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-12-07 12:09:12,658 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2019-12-07 12:09:12,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 12:09:12,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:12,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:12,658 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 12:09:12,658 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2019-12-07 12:09:12,658 INFO L794 eck$LassoCheckResult]: Stem: 412#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 413#L10-2 [2019-12-07 12:09:12,659 INFO L796 eck$LassoCheckResult]: Loop: 413#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 410#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 411#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 422#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 421#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 420#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 419#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 418#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 417#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 416#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 415#L12-2 assume !(main_~j~0 < 12); 414#L12-3 main_~i~0 := 1 + main_~i~0; 413#L10-2 [2019-12-07 12:09:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,659 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2019-12-07 12:09:12,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127514647] [2019-12-07 12:09:12,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,663 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2019-12-07 12:09:12,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438131524] [2019-12-07 12:09:12,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,677 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:12,678 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2019-12-07 12:09:12,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:12,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623487601] [2019-12-07 12:09:12,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:12,691 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:12,813 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-12-07 12:09:12,835 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:12,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:12,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:12,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:12,836 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:09:12,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:12,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:12,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-12-07 12:09:12,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:12,837 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:12,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,910 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:12,910 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:12,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:12,921 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:12,921 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:12,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:12,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:12,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:12,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:12,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:12,937 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:12,945 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:09:12,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:12,958 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:09:12,959 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:12,959 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:12,959 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:12,959 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:12,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:09:12,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:12,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:12,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:12,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-12-07 12:09:12,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:12,960 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:12,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:12,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,016 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:13,020 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,023 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 [2019-12-07 12:09:13,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:09:13,029 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:09:13,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,040 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 [2019-12-07 12:09:13,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,044 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,047 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 [2019-12-07 12:09:13,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,050 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:09:13,050 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:09:13,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 12:09:13,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,060 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:09:13,065 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:09:13,065 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:09:13,069 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:09:13,069 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:09:13,069 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-12-07 12:09:13,073 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:09:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,096 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,096 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,103 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,104 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-12-07 12:09:13,115 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 [2019-12-07 12:09:13,115 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-12-07 12:09:13,135 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 25 states and 28 transitions. Complement of second has 4 states. [2019-12-07 12:09:13,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:09:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:09:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 12:09:13,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2019-12-07 12:09:13,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2019-12-07 12:09:13,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2019-12-07 12:09:13,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,137 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-12-07 12:09:13,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 12:09:13,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2019-12-07 12:09:13,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 12:09:13,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 12:09:13,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2019-12-07 12:09:13,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:09:13,139 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 12:09:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2019-12-07 12:09:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2019-12-07 12:09:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 12:09:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-12-07 12:09:13,141 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 12:09:13,141 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 12:09:13,141 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-12-07 12:09:13,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-12-07 12:09:13,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 12:09:13,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:13,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:13,142 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 12:09:13,142 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 12:09:13,142 INFO L794 eck$LassoCheckResult]: Stem: 510#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 511#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 507#L12-2 [2019-12-07 12:09:13,142 INFO L796 eck$LassoCheckResult]: Loop: 507#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 507#L12-2 [2019-12-07 12:09:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 12:09:13,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901429392] [2019-12-07 12:09:13,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,146 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 12:09:13,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365231319] [2019-12-07 12:09:13,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,149 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 12:09:13,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356060892] [2019-12-07 12:09:13,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,153 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,163 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:13,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:13,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:13,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:13,163 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:09:13,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:13,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:13,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-12-07 12:09:13,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:13,164 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:13,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,204 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:13,204 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:13,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:13,218 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,224 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:09:13,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:13,246 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/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,256 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:09:13,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,269 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:09:13,270 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:13,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:13,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:13,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:13,271 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:09:13,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:13,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:13,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-12-07 12:09:13,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:13,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:13,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,310 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:13,310 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,313 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 [2019-12-07 12:09:13,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:09:13,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:09:13,320 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,325 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 [2019-12-07 12:09:13,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,329 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:09:13,329 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:09:13,332 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,337 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 [2019-12-07 12:09:13,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,345 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 [2019-12-07 12:09:13,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,347 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,348 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,348 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,350 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:09:13,352 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:09:13,352 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,354 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:09:13,354 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:09:13,355 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:09:13,355 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-12-07 12:09:13,357 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:09:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,368 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,368 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,370 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:13,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:09:13,371 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 12:09:13,377 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2019-12-07 12:09:13,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:09:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 12:09:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 12:09:13,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 12:09:13,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 12:09:13,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 12:09:13,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2019-12-07 12:09:13,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 12:09:13,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2019-12-07 12:09:13,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 12:09:13,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 12:09:13,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2019-12-07 12:09:13,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:09:13,380 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-12-07 12:09:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2019-12-07 12:09:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-12-07 12:09:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 12:09:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 12:09:13,381 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 12:09:13,381 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 12:09:13,381 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-12-07 12:09:13,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-12-07 12:09:13,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 12:09:13,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:09:13,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:09:13,383 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2019-12-07 12:09:13,383 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 12:09:13,383 INFO L794 eck$LassoCheckResult]: Stem: 585#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 586#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 583#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 584#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 596#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 595#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 594#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 593#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 592#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 591#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 590#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 589#L12-2 assume !(main_~j~0 < 12); 588#L12-3 main_~i~0 := 1 + main_~i~0; 587#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 582#L12-2 [2019-12-07 12:09:13,383 INFO L796 eck$LassoCheckResult]: Loop: 582#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 582#L12-2 [2019-12-07 12:09:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,383 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2019-12-07 12:09:13,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239300794] [2019-12-07 12:09:13,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-12-07 12:09:13,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619218769] [2019-12-07 12:09:13,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,405 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2019-12-07 12:09:13,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:09:13,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767335677] [2019-12-07 12:09:13,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:09:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:09:13,421 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:09:13,431 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:13,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:13,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:13,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:13,432 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:09:13,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:13,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:13,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-12-07 12:09:13,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:13,432 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:13,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,468 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:13,468 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,471 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:09:13,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:13,491 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/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:09:13,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,505 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:09:13,505 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:09:13,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:09:13,518 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:09:13,519 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:09:13,519 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:09:13,519 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:09:13,519 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:09:13,520 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:09:13,520 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,520 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:09:13,520 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:09:13,520 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-12-07 12:09:13,520 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:09:13,520 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:09:13,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:09:13,556 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:09:13,556 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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 [2019-12-07 12:09:13,560 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 [2019-12-07 12:09:13,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,563 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,568 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 [2019-12-07 12:09:13,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:09:13,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:09:13,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:09:13,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:09:13,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:09:13,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:09:13,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:09:13,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:09:13,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:09:13,575 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf65a9d6-4938-4c33-8211-8beda7b37151/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) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:09:13,580 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:09:13,580 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:09:13,580 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:09:13,580 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-12-07 12:09:13,582 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:09:13,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,598 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,602 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:13,603 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:09:13,603 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 12:09:13,611 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-12-07 12:09:13,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:09:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 12:09:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 12:09:13,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-12-07 12:09:13,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,612 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:09:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,625 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,625 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,628 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,628 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:13,628 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:09:13,628 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 12:09:13,633 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-12-07 12:09:13,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:09:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 12:09:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 12:09:13,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-12-07 12:09:13,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,634 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:09:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:09:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,649 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:09:13,652 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:09:13,653 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:09:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:09:13,653 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:09:13,653 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 12:09:13,659 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 18 states and 20 transitions. Complement of second has 4 states. [2019-12-07 12:09:13,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:09:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 12:09:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 12:09:13,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2019-12-07 12:09:13,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2019-12-07 12:09:13,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2019-12-07 12:09:13,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:09:13,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2019-12-07 12:09:13,661 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:09:13,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-12-07 12:09:13,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:09:13,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:09:13,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:09:13,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:09:13,662 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:09:13,662 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:09:13,662 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:09:13,662 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-12-07 12:09:13,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:09:13,662 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:09:13,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 12:09:13,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:09:13 BoogieIcfgContainer [2019-12-07 12:09:13,666 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 12:09:13,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:09:13,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:09:13,667 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:09:13,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:09:11" (3/4) ... [2019-12-07 12:09:13,669 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:09:13,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:09:13,670 INFO L168 Benchmark]: Toolchain (without parser) took 2276.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 946.0 MB in the beginning and 953.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 117.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:09:13,670 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:09:13,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -176.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:09:13,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.18 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. [2019-12-07 12:09:13,672 INFO L168 Benchmark]: Boogie Preprocessor took 11.64 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. [2019-12-07 12:09:13,672 INFO L168 Benchmark]: RCFGBuilder took 127.31 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. [2019-12-07 12:09:13,672 INFO L168 Benchmark]: BuchiAutomizer took 1945.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.5 MB in the end (delta: 149.1 MB). Peak memory consumption was 149.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:09:13,673 INFO L168 Benchmark]: Witness Printer took 2.71 ms. Allocated memory is still 1.2 GB. Free memory is still 953.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:09:13,675 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -176.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.18 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. * Boogie Preprocessor took 11.64 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 127.31 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 1945.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.5 MB in the end (delta: 149.1 MB). Peak memory consumption was 149.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.71 ms. Allocated memory is still 1.2 GB. Free memory is still 953.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 21 SDslu, 50 SDs, 0 SdLazy, 157 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf99 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...