./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 0.1.24-cad4683 [2019-10-22 09:02:21,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:21,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:21,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:21,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:21,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:21,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:21,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:21,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:21,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:21,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:21,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:21,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:21,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:21,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:21,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:21,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:21,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:21,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:21,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:21,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:21,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:21,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:21,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:21,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:21,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:21,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:21,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:22,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:22,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:22,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:22,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:22,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:22,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:22,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:22,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:22,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:22,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:22,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:22,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:22,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:22,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:02:22,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:22,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:22,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:22,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:22,023 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:22,023 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:22,023 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:22,023 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:22,024 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:22,024 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:22,024 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:22,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:22,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:22,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:22,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:22,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:22,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:22,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:22,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:22,026 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:22,026 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:22,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:22,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:22,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:22,027 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:22,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:22,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:22,028 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:22,031 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:22,031 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:22,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:22,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:22,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:22,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:22,085 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:22,086 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-10-22 09:02:22,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/data/0f02bb6b1/581dac609f7e4dffaf013cc3a8547c56/FLAG7e1ee6ee5 [2019-10-22 09:02:22,521 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:22,521 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-10-22 09:02:22,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/data/0f02bb6b1/581dac609f7e4dffaf013cc3a8547c56/FLAG7e1ee6ee5 [2019-10-22 09:02:22,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/data/0f02bb6b1/581dac609f7e4dffaf013cc3a8547c56 [2019-10-22 09:02:22,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:22,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:22,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:22,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:22,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:22,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:22" (1/1) ... [2019-10-22 09:02:22,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc8eb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:22, skipping insertion in model container [2019-10-22 09:02:22,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:22" (1/1) ... [2019-10-22 09:02:22,944 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:22,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:23,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:23,108 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:23,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:23,190 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:23,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23 WrapperNode [2019-10-22 09:02:23,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:23,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:23,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:23,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:23,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:23,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:23,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:23,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:23,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... [2019-10-22 09:02:23,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:23,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:23,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:23,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:23,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:23,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:23,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:23,471 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:23,472 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:02:23,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:23 BoogieIcfgContainer [2019-10-22 09:02:23,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:23,474 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:23,474 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:23,480 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:23,482 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:23,483 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:22" (1/3) ... [2019-10-22 09:02:23,484 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38923bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:23, skipping insertion in model container [2019-10-22 09:02:23,484 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:23,484 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:23" (2/3) ... [2019-10-22 09:02:23,484 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38923bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:23, skipping insertion in model container [2019-10-22 09:02:23,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:23,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:23" (3/3) ... [2019-10-22 09:02:23,487 INFO L371 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2019-10-22 09:02:23,534 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:23,534 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:23,534 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:23,534 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:23,534 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:23,535 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:23,535 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:23,535 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:23,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:23,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:23,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:23,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:23,583 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:23,583 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:23,584 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:23,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:23,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:02:23,585 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:23,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:23,586 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:23,586 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:02:23,595 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 7#L10-2true [2019-10-22 09:02:23,595 INFO L793 eck$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 [2019-10-22 09:02:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:02:23,615 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:23,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022553690] [2019-10-22 09:02:23,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:23,720 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-10-22 09:02:23,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:23,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106223729] [2019-10-22 09:02:23,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:23,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106223729] [2019-10-22 09:02:23,834 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:23,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:23,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33597262] [2019-10-22 09:02:23,840 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:23,841 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:23,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:23,884 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-10-22 09:02:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:23,947 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-10-22 09:02:23,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:23,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-10-22 09:02:23,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:02:23,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2019-10-22 09:02:23,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 09:02:23,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 09:02:23,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2019-10-22 09:02:23,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:23,968 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-10-22 09:02:23,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2019-10-22 09:02:23,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-10-22 09:02:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:02:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2019-10-22 09:02:23,993 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-10-22 09:02:23,993 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-10-22 09:02:23,993 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:23,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2019-10-22 09:02:23,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:02:23,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:23,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:23,994 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:23,994 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 09:02:23,995 INFO L791 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 [2019-10-22 09:02:23,995 INFO L793 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 [2019-10-22 09:02:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-10-22 09:02:23,996 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:23,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444077543] [2019-10-22 09:02:23,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:23,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,003 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2019-10-22 09:02:24,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505515995] [2019-10-22 09:02:24,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505515995] [2019-10-22 09:02:24,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790365280] [2019-10-22 09:02:24,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,087 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-10-22 09:02:24,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854845192] [2019-10-22 09:02:24,088 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:24,089 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-10-22 09:02:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,110 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2019-10-22 09:02:24,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:24,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2019-10-22 09:02:24,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:24,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 09:02:24,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 09:02:24,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 09:02:24,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-10-22 09:02:24,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,113 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:02:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-10-22 09:02:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-10-22 09:02:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:02:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 09:02:24,114 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:02:24,114 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:02:24,115 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:24,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-10-22 09:02:24,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:24,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,116 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,116 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2019-10-22 09:02:24,116 INFO L791 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 56#L10-2 [2019-10-22 09:02:24,116 INFO L793 eck$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 [2019-10-22 09:02:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-10-22 09:02:24,117 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076421468] [2019-10-22 09:02:24,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,124 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2019-10-22 09:02:24,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001204982] [2019-10-22 09:02:24,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001204982] [2019-10-22 09:02:24,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825909213] [2019-10-22 09:02:24,163 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,194 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:02:24,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:24,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-10-22 09:02:24,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442786962] [2019-10-22 09:02:24,201 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:24,202 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-10-22 09:02:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,219 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-10-22 09:02:24,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:24,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-10-22 09:02:24,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 09:02:24,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2019-10-22 09:02:24,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 09:02:24,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 09:02:24,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-10-22 09:02:24,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,222 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 09:02:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-10-22 09:02:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 09:02:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 09:02:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-10-22 09:02:24,223 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 09:02:24,224 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 09:02:24,224 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:02:24,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-10-22 09:02:24,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-10-22 09:02:24,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,225 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,225 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2019-10-22 09:02:24,225 INFO L791 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 [2019-10-22 09:02:24,226 INFO L793 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 [2019-10-22 09:02:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,226 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2019-10-22 09:02:24,226 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146426807] [2019-10-22 09:02:24,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,227 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,232 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2019-10-22 09:02:24,233 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583189901] [2019-10-22 09:02:24,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583189901] [2019-10-22 09:02:24,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629874731] [2019-10-22 09:02:24,285 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,311 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-22 09:02:24,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:24,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,319 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-22 09:02:24,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641137068] [2019-10-22 09:02:24,319 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:24,320 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-10-22 09:02:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,344 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-10-22 09:02:24,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:24,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-10-22 09:02:24,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-10-22 09:02:24,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 09:02:24,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 09:02:24,347 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:02:24,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-10-22 09:02:24,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,348 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 09:02:24,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-10-22 09:02:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 09:02:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 09:02:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 09:02:24,351 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 09:02:24,351 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 09:02:24,351 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:02:24,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-10-22 09:02:24,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-10-22 09:02:24,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,352 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,352 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2019-10-22 09:02:24,352 INFO L791 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 128#L10-2 [2019-10-22 09:02:24,353 INFO L793 eck$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 [2019-10-22 09:02:24,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,353 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2019-10-22 09:02:24,353 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309767098] [2019-10-22 09:02:24,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,361 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2019-10-22 09:02:24,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483963606] [2019-10-22 09:02:24,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,362 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,438 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483963606] [2019-10-22 09:02:24,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248113850] [2019-10-22 09:02:24,439 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,468 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 09:02:24,468 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:24,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,475 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-10-22 09:02:24,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998687118] [2019-10-22 09:02:24,476 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:24,477 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 7 states. [2019-10-22 09:02:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,501 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-10-22 09:02:24,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:24,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-10-22 09:02:24,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-10-22 09:02:24,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 09:02:24,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-10-22 09:02:24,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-10-22 09:02:24,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2019-10-22 09:02:24,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,504 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 09:02:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2019-10-22 09:02:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 09:02:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 09:02:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-10-22 09:02:24,506 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 09:02:24,506 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-10-22 09:02:24,506 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 09:02:24,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2019-10-22 09:02:24,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-10-22 09:02:24,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,507 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,507 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2019-10-22 09:02:24,507 INFO L791 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 [2019-10-22 09:02:24,507 INFO L793 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 [2019-10-22 09:02:24,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2019-10-22 09:02:24,508 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524043310] [2019-10-22 09:02:24,508 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,508 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,514 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2019-10-22 09:02:24,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100097297] [2019-10-22 09:02:24,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100097297] [2019-10-22 09:02:24,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013543648] [2019-10-22 09:02:24,575 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,610 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-10-22 09:02:24,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:24,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,625 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,625 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-10-22 09:02:24,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925130118] [2019-10-22 09:02:24,626 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:24,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:24,627 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 8 states. [2019-10-22 09:02:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,665 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-10-22 09:02:24,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:02:24,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2019-10-22 09:02:24,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-10-22 09:02:24,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 09:02:24,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-10-22 09:02:24,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-10-22 09:02:24,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2019-10-22 09:02:24,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,668 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 09:02:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2019-10-22 09:02:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 09:02:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 09:02:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 09:02:24,671 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 09:02:24,671 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 09:02:24,671 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-10-22 09:02:24,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2019-10-22 09:02:24,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-10-22 09:02:24,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,672 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,673 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2019-10-22 09:02:24,673 INFO L791 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 224#L10-2 [2019-10-22 09:02:24,673 INFO L793 eck$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 [2019-10-22 09:02:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2019-10-22 09:02:24,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982297507] [2019-10-22 09:02:24,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,679 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2019-10-22 09:02:24,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334795812] [2019-10-22 09:02:24,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334795812] [2019-10-22 09:02:24,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060502162] [2019-10-22 09:02:24,769 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,803 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-10-22 09:02:24,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:24,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,812 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-10-22 09:02:24,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618334446] [2019-10-22 09:02:24,812 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:02:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:24,813 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 9 states. [2019-10-22 09:02:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:24,838 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-10-22 09:02:24,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:02:24,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2019-10-22 09:02:24,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-10-22 09:02:24,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2019-10-22 09:02:24,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-10-22 09:02:24,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 09:02:24,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2019-10-22 09:02:24,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:24,840 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 09:02:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2019-10-22 09:02:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 09:02:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 09:02:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-10-22 09:02:24,842 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 09:02:24,842 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-10-22 09:02:24,842 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-10-22 09:02:24,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-10-22 09:02:24,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-10-22 09:02:24,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:24,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:24,843 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:24,843 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2019-10-22 09:02:24,843 INFO L791 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 [2019-10-22 09:02:24,843 INFO L793 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 [2019-10-22 09:02:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,844 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2019-10-22 09:02:24,844 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362460302] [2019-10-22 09:02:24,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,844 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:24,850 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2019-10-22 09:02:24,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:24,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850961491] [2019-10-22 09:02:24,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:24,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850961491] [2019-10-22 09:02:24,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785255734] [2019-10-22 09:02:24,939 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:24,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:02:24,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:24,982 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:24,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-10-22 09:02:24,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572641806] [2019-10-22 09:02:24,988 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:24,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:24,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:24,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:24,989 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 10 states. [2019-10-22 09:02:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:25,026 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-10-22 09:02:25,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:25,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2019-10-22 09:02:25,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-10-22 09:02:25,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2019-10-22 09:02:25,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-10-22 09:02:25,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-10-22 09:02:25,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-10-22 09:02:25,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:25,029 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 09:02:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-10-22 09:02:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 09:02:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 09:02:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-22 09:02:25,031 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 09:02:25,031 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-22 09:02:25,032 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-10-22 09:02:25,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-10-22 09:02:25,032 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-10-22 09:02:25,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:25,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:25,033 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:25,033 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2019-10-22 09:02:25,034 INFO L791 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 344#L10-2 [2019-10-22 09:02:25,034 INFO L793 eck$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 [2019-10-22 09:02:25,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2019-10-22 09:02:25,034 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249012535] [2019-10-22 09:02:25,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,040 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2019-10-22 09:02:25,041 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799474074] [2019-10-22 09:02:25,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:25,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799474074] [2019-10-22 09:02:25,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691325751] [2019-10-22 09:02:25,187 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:25,224 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:02:25,224 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:02:25,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 09:02:25,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:25,237 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:02:25,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-10-22 09:02:25,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273209478] [2019-10-22 09:02:25,238 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 09:02:25,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:25,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:02:25,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:02:25,242 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 11 states. [2019-10-22 09:02:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:25,280 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-10-22 09:02:25,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:02:25,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2019-10-22 09:02:25,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-10-22 09:02:25,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2019-10-22 09:02:25,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-10-22 09:02:25,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-10-22 09:02:25,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-10-22 09:02:25,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:25,284 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-22 09:02:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-10-22 09:02:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 09:02:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 09:02:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-22 09:02:25,286 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-22 09:02:25,286 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-22 09:02:25,286 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-10-22 09:02:25,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2019-10-22 09:02:25,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-10-22 09:02:25,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:25,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:25,287 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:25,288 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2019-10-22 09:02:25,290 INFO L791 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 [2019-10-22 09:02:25,291 INFO L793 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 [2019-10-22 09:02:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2019-10-22 09:02:25,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694400769] [2019-10-22 09:02:25,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,297 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,299 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2019-10-22 09:02:25,299 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341659089] [2019-10-22 09:02:25,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,349 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:25,353 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2019-10-22 09:02:25,353 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:25,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845115961] [2019-10-22 09:02:25,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:25,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:25,389 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:25,575 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-10-22 09:02:25,605 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:25,606 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:25,606 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:25,606 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:25,606 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:25,606 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:25,607 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:25,607 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:25,607 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-10-22 09:02:25,607 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:25,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:25,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:25,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:25,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:25,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:25,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:25,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:25,741 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:25,741 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:25,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:25,744 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/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 [2019-10-22 09:02:25,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:25,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:25,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:25,755 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/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:25,770 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:25,770 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:25,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:25,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:25,839 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:25,844 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:25,844 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:25,844 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:25,844 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:25,844 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:25,844 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:25,844 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:25,844 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:25,845 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-10-22 09:02:25,845 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:25,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:25,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:25,956 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:25,961 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:25,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:25,964 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:25,965 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:25,965 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:25,965 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:25,969 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:25,969 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:25,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:25,973 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:25,974 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:25,974 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:25,974 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:25,975 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:25,975 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:25,975 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:25,975 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:25,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:25,978 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:25,979 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:25,979 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:25,979 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:25,980 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:25,982 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:25,982 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:25,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:25,986 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:25,986 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:25,987 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:25,987 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:25,987 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:25,987 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:25,988 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:25,988 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:25,991 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:25,993 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:25,993 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:25,995 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:25,996 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:25,996 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:25,996 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-10-22 09:02:26,000 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-22 09:02:26,060 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 09:02:26,061 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-10-22 09:02:26,086 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. [2019-10-22 09:02:26,087 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 [2019-10-22 09:02:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:02:26,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2019-10-22 09:02:26,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2019-10-22 09:02:26,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2019-10-22 09:02:26,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-10-22 09:02:26,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:26,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2019-10-22 09:02:26,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-10-22 09:02:26,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-10-22 09:02:26,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2019-10-22 09:02:26,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:26,092 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-22 09:02:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2019-10-22 09:02:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2019-10-22 09:02:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:02:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-10-22 09:02:26,096 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-10-22 09:02:26,096 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-10-22 09:02:26,096 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-10-22 09:02:26,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-10-22 09:02:26,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:26,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:26,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:26,100 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:26,100 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 09:02:26,100 INFO L791 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 [2019-10-22 09:02:26,100 INFO L793 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 [2019-10-22 09:02:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 09:02:26,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018058623] [2019-10-22 09:02:26,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,106 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,106 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 09:02:26,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584532409] [2019-10-22 09:02:26,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,107 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,113 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 09:02:26,115 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856309373] [2019-10-22 09:02:26,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,121 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,141 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:26,142 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:26,142 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:26,142 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:26,142 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:26,142 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,142 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:26,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:26,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-10-22 09:02:26,143 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:26,143 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:26,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,197 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:26,197 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:26,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,207 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,214 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:26,214 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:26,248 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/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,259 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:26,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:26,278 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,288 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:26,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:26,310 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:26,310 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:26,310 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:26,311 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:26,311 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:26,311 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,311 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:26,311 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:26,311 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-10-22 09:02:26,311 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:26,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:26,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,368 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:26,368 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:26,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,369 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,369 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,369 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,369 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,370 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:26,370 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:26,372 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:26,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,373 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,373 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,373 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,373 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,374 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:26,375 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:26,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:26,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,378 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,378 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:26,378 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,378 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,379 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,379 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:26,379 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:26,381 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:26,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,382 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,382 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:26,382 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,382 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,382 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,383 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:26,383 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:26,385 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:26,386 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:26,387 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:26,387 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:26,387 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:26,387 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:26,387 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-10-22 09:02:26,388 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,407 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:26,408 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 [2019-10-22 09:02:26,408 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-10-22 09:02:26,416 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. [2019-10-22 09:02:26,416 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 [2019-10-22 09:02:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:02:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:02:26,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 09:02:26,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 09:02:26,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 09:02:26,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2019-10-22 09:02:26,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:26,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2019-10-22 09:02:26,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-10-22 09:02:26,419 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-10-22 09:02:26,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2019-10-22 09:02:26,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:26,419 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-22 09:02:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2019-10-22 09:02:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-10-22 09:02:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 09:02:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-10-22 09:02:26,421 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 09:02:26,421 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-10-22 09:02:26,421 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-10-22 09:02:26,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-10-22 09:02:26,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 09:02:26,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:26,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:26,422 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2019-10-22 09:02:26,422 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 09:02:26,422 INFO L791 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 [2019-10-22 09:02:26,422 INFO L793 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 [2019-10-22 09:02:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2019-10-22 09:02:26,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875545331] [2019-10-22 09:02:26,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,438 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-10-22 09:02:26,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,439 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604038204] [2019-10-22 09:02:26,439 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,443 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2019-10-22 09:02:26,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:26,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389142313] [2019-10-22 09:02:26,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:26,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:26,460 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:26,472 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:26,472 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:26,472 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:26,472 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:26,472 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:26,472 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,472 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:26,472 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:26,473 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-10-22 09:02:26,473 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:26,473 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:26,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,526 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:26,527 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,531 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:26,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:26,548 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:26,564 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/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:26,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:26,580 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_47273896-55e3-4af6-bf20-673bdda75f41/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:26,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:26,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:26,614 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:26,614 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:26,614 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:26,614 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:26,614 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:26,614 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:26,614 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:26,614 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:26,615 INFO L131 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-10-22 09:02:26,615 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:26,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:26,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:26,667 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:26,668 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:26,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,669 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,669 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:26,669 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,669 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,669 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,670 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:26,670 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:26,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:26,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:26,673 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:26,673 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:26,673 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:26,673 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:26,673 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:26,674 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:26,674 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:26,676 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:26,678 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:26,678 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:26,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:26,679 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:26,679 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:26,679 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-10-22 09:02:26,679 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,707 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:26,708 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 [2019-10-22 09:02:26,708 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:02:26,717 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. [2019-10-22 09:02:26,717 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 [2019-10-22 09:02:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:02:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:02:26,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-10-22 09:02:26,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,718 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:02:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,746 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:26,746 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 [2019-10-22 09:02:26,746 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:02:26,753 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. [2019-10-22 09:02:26,754 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 [2019-10-22 09:02:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:02:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-10-22 09:02:26,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-10-22 09:02:26,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,755 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:02:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:26,781 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:26,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:26,782 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 [2019-10-22 09:02:26,782 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-10-22 09:02:26,790 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. [2019-10-22 09:02:26,791 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 [2019-10-22 09:02:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 09:02:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-10-22 09:02:26,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2019-10-22 09:02:26,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2019-10-22 09:02:26,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2019-10-22 09:02:26,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:26,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2019-10-22 09:02:26,794 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:26,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-10-22 09:02:26,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:26,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:26,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:26,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:26,795 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:26,795 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:26,795 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:26,795 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-10-22 09:02:26,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:26,795 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:26,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:02:26,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:26 BoogieIcfgContainer [2019-10-22 09:02:26,802 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:26,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:26,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:26,803 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:26,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:23" (3/4) ... [2019-10-22 09:02:26,807 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:26,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:26,809 INFO L168 Benchmark]: Toolchain (without parser) took 3880.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -146.0 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:26,809 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:26,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:26,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:26,810 INFO L168 Benchmark]: Boogie Preprocessor took 15.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:26,810 INFO L168 Benchmark]: RCFGBuilder took 235.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:26,811 INFO L168 Benchmark]: BuchiAutomizer took 3328.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:26,811 INFO L168 Benchmark]: Witness Printer took 4.84 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-10-22 09:02:26,814 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.15 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 15.03 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 235.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3328.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.84 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: 24 B). Peak memory consumption was 24 B. 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 3.2s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 2.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. 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, 0.2s 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: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...