./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.14_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.14_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/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 95b7495f0c2baf7340e092922372d61d5e360ef5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:06:44,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:44,950 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:44,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:44,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:44,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:44,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:44,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:44,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:44,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:44,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:44,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:44,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:44,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:44,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:44,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:44,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:44,970 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:44,972 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:44,973 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:44,974 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:44,975 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:44,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:44,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:44,977 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:44,978 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:44,978 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:44,979 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:44,980 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:44,981 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:44,981 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:44,981 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:44,982 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:44,982 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:44,982 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:44,984 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:44,984 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:06:44,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:44,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:44,996 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:44,996 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:44,997 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:44,997 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:44,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:44,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:44,999 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:44,999 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:45,000 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:45,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:45,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:45,001 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:45,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:45,001 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:45,001 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:45,002 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:45,002 INFO L133 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_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/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 -> 95b7495f0c2baf7340e092922372d61d5e360ef5 [2018-10-27 06:06:45,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:45,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:45,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:45,040 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:45,040 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:45,041 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.14_true-termination_true-no-overflow.c [2018-10-27 06:06:45,092 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/data/770ad27c0/58c9a99e66e849c4a9b53253f5009561/FLAGf96100529 [2018-10-27 06:06:45,466 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:45,466 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/sv-benchmarks/c/termination-restricted-15/b.14_true-termination_true-no-overflow.c [2018-10-27 06:06:45,470 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/data/770ad27c0/58c9a99e66e849c4a9b53253f5009561/FLAGf96100529 [2018-10-27 06:06:45,481 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/data/770ad27c0/58c9a99e66e849c4a9b53253f5009561 [2018-10-27 06:06:45,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:45,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:45,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:45,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:45,488 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:45,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1511b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45, skipping insertion in model container [2018-10-27 06:06:45,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:45,514 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:45,620 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:45,622 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:45,632 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:45,641 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:45,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45 WrapperNode [2018-10-27 06:06:45,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:45,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:45,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:45,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:45,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:45,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:45,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:45,668 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:45,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... [2018-10-27 06:06:45,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:45,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:45,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:45,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:45,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/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 [2018-10-27 06:06:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:46,013 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:46,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:46 BoogieIcfgContainer [2018-10-27 06:06:46,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:46,014 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:46,014 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:46,018 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:46,018 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:46,019 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:45" (1/3) ... [2018-10-27 06:06:46,020 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@589f3076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:46, skipping insertion in model container [2018-10-27 06:06:46,020 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:46,020 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:45" (2/3) ... [2018-10-27 06:06:46,020 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@589f3076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:46, skipping insertion in model container [2018-10-27 06:06:46,020 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:46,021 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:46" (3/3) ... [2018-10-27 06:06:46,022 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.14_true-termination_true-no-overflow.c [2018-10-27 06:06:46,071 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:46,072 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:46,072 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:46,072 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:46,072 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:46,072 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:46,072 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:46,073 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:46,073 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:46,086 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-10-27 06:06:46,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:46,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:46,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:46,111 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:46,111 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:46,111 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:46,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-10-27 06:06:46,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:46,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:46,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:46,112 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:46,112 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:46,120 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 9#L12-4true [2018-10-27 06:06:46,121 INFO L795 eck$LassoCheckResult]: Loop: 9#L12-4true assume true; 4#L11-1true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 12#L12-3true assume !true; 9#L12-4true [2018-10-27 06:06:46,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,126 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:06:46,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:46,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,208 INFO L82 PathProgramCache]: Analyzing trace with hash 35953, now seen corresponding path program 1 times [2018-10-27 06:06:46,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:46,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:46,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:46,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-10-27 06:06:46,242 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:06:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:06:46,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:06:46,257 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2018-10-27 06:06:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:46,263 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-10-27 06:06:46,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:06:46,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2018-10-27 06:06:46,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:46,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2018-10-27 06:06:46,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-10-27 06:06:46,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-10-27 06:06:46,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2018-10-27 06:06:46,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:46,272 INFO L705 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-10-27 06:06:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2018-10-27 06:06:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-27 06:06:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-27 06:06:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-10-27 06:06:46,296 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-10-27 06:06:46,296 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-10-27 06:06:46,296 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:46,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-10-27 06:06:46,297 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-10-27 06:06:46,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:46,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:46,297 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:46,297 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:06:46,298 INFO L793 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 28#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 29#L12-4 [2018-10-27 06:06:46,298 INFO L795 eck$LassoCheckResult]: Loop: 29#L12-4 assume true; 30#L11-1 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 31#L12-3 assume true; 33#L12-1 assume !(main_~y~0 > 0); 29#L12-4 [2018-10-27 06:06:46,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:06:46,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:46,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1114315, now seen corresponding path program 1 times [2018-10-27 06:06:46,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:46,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:46,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:46,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:06:46,381 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:06:46,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:06:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:06:46,382 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-10-27 06:06:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:46,395 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-10-27 06:06:46,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:06:46,397 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2018-10-27 06:06:46,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:06:46,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2018-10-27 06:06:46,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-10-27 06:06:46,398 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:06:46,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-10-27 06:06:46,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:46,398 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-10-27 06:06:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-10-27 06:06:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-27 06:06:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-27 06:06:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-10-27 06:06:46,400 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-10-27 06:06:46,400 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-10-27 06:06:46,400 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:46,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2018-10-27 06:06:46,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:06:46,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:46,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:46,401 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:46,401 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2018-10-27 06:06:46,401 INFO L793 eck$LassoCheckResult]: Stem: 52#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 48#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 49#L12-4 [2018-10-27 06:06:46,401 INFO L795 eck$LassoCheckResult]: Loop: 49#L12-4 assume true; 50#L11-1 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 51#L12-3 assume true; 53#L12-1 assume !!(main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1;main_~c~0 := main_~c~0 + 1; 54#L12-3 assume true; 55#L12-1 assume !(main_~y~0 > 0); 49#L12-4 [2018-10-27 06:06:46,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,401 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2018-10-27 06:06:46,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:46,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1070859153, now seen corresponding path program 1 times [2018-10-27 06:06:46,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:46,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:46,427 INFO L82 PathProgramCache]: Analyzing trace with hash 150908371, now seen corresponding path program 1 times [2018-10-27 06:06:46,427 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:46,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:46,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:46,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:46,603 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2018-10-27 06:06:46,645 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:46,646 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:46,647 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:46,647 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:46,647 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:46,647 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:46,647 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:46,647 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:46,647 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.14_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:46,647 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:46,648 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:46,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:46,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:46,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:46,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:46,938 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-27 06:06:47,021 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:47,021 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:47,026 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:47,026 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a1a33921-aa23-454f-b0db-2cf44d5c8748/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:47,052 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:47,052 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:47,077 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:47,078 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:47,079 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:47,079 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:47,079 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:47,079 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:47,079 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:47,079 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:47,079 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:47,079 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.14_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:47,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:47,080 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:47,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:47,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:47,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:47,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:47,259 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:47,262 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:47,263 INFO L122 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 [2018-10-27 06:06:47,264 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:47,265 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:47,265 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:47,265 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:47,265 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:47,267 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:47,267 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:47,276 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:47,281 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:47,281 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:47,283 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:47,283 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:47,284 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:47,284 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:47,285 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:47,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:47,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:47,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:47,427 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 [2018-10-27 06:06:47,428 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-10-27 06:06:47,502 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 15 states and 17 transitions. Complement of second has 6 states. [2018-10-27 06:06:47,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-10-27 06:06:47,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:06:47,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:47,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2018-10-27 06:06:47,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:47,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 12 letters. [2018-10-27 06:06:47,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:47,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2018-10-27 06:06:47,508 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:47,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2018-10-27 06:06:47,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:47,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:47,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:47,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:47,508 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:47,508 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:47,508 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:47,509 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:06:47,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:06:47,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:47,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:06:47,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:06:47 BoogieIcfgContainer [2018-10-27 06:06:47,514 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:06:47,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:06:47,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:06:47,514 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:06:47,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:46" (3/4) ... [2018-10-27 06:06:47,518 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:06:47,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:06:47,519 INFO L168 Benchmark]: Toolchain (without parser) took 2035.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 955.8 MB in the beginning and 1.1 GB in the end (delta: -105.4 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,519 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:47,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.41 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.56 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:47,521 INFO L168 Benchmark]: Boogie Preprocessor took 14.64 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,521 INFO L168 Benchmark]: RCFGBuilder took 330.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,522 INFO L168 Benchmark]: BuchiAutomizer took 1499.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,522 INFO L168 Benchmark]: Witness Printer took 3.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:47,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.41 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 945.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.56 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.64 ms. Allocated memory is still 1.0 GB. Free memory was 945.0 MB in the beginning and 942.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 330.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1499.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 96.6 MB). Peak memory consumption was 96.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 21 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax144 hnf97 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp76 dnf100 smp100 tf107 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...