./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex02.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_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex02.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/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 415986e62fd4d8c762d30906d2737401bd104fcd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:20,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:20,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:20,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:20,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:20,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:20,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:20,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:20,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:20,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:20,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:20,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:20,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:20,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:20,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:20,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:20,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:20,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:20,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:20,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:20,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:20,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:20,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:20,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:20,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:20,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:20,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:20,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:20,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:20,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:20,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:20,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:20,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:20,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:20,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:20,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:20,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:20,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:20,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:20,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:20,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:20,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:20,064 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:20,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:20,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:20,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:20,066 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:20,066 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:20,066 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:20,066 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:20,066 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:20,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:20,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:20,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:20,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:20,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:20,069 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:20,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:20,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:20,070 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:20,071 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:20,071 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_93085cff-1d34-442d-bcdd-e6dd74a2e809/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 -> 415986e62fd4d8c762d30906d2737401bd104fcd [2019-10-22 08:56:20,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:20,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:20,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:20,124 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:20,124 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:20,125 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex02.c [2019-10-22 08:56:20,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/data/12955275b/68eb834f8a034d098b9623ac9fc619ad/FLAG720f8fbb9 [2019-10-22 08:56:20,543 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:20,544 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/sv-benchmarks/c/termination-restricted-15/Ex02.c [2019-10-22 08:56:20,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/data/12955275b/68eb834f8a034d098b9623ac9fc619ad/FLAG720f8fbb9 [2019-10-22 08:56:20,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/data/12955275b/68eb834f8a034d098b9623ac9fc619ad [2019-10-22 08:56:20,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:20,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:20,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:20,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:20,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:20,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:20" (1/1) ... [2019-10-22 08:56:20,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70838e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:20, skipping insertion in model container [2019-10-22 08:56:20,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:20" (1/1) ... [2019-10-22 08:56:20,987 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:20,999 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:21,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:21,121 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:21,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:21,203 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:21,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21 WrapperNode [2019-10-22 08:56:21,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:21,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:21,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:21,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:21,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:21,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:21,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:21,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:21,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... [2019-10-22 08:56:21,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:21,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:21,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:21,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:21,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:21,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:21,431 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:21,432 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:56:21,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:21 BoogieIcfgContainer [2019-10-22 08:56:21,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:21,435 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:21,435 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:21,439 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:21,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:21,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:20" (1/3) ... [2019-10-22 08:56:21,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d1caa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:21, skipping insertion in model container [2019-10-22 08:56:21,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:21,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:21" (2/3) ... [2019-10-22 08:56:21,443 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d1caa21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:21, skipping insertion in model container [2019-10-22 08:56:21,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:21,444 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:21" (3/3) ... [2019-10-22 08:56:21,446 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex02.c [2019-10-22 08:56:21,496 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:21,496 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:21,496 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:21,496 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:21,496 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:21,497 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:21,497 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:21,497 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:21,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:21,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:21,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:21,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:21,537 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:21,537 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:21,538 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:21,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-10-22 08:56:21,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:21,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:21,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:21,539 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:21,539 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:21,546 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2019-10-22 08:56:21,547 INFO L793 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 > 0); 4#L10true assume 5 != main_~i~0;main_~i~0 := main_~i~0 - 1; 8#L10-2true [2019-10-22 08:56:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:56:21,562 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:21,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407198510] [2019-10-22 08:56:21,562 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,562 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,657 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 08:56:21,659 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:21,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486272723] [2019-10-22 08:56:21,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,678 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:56:21,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:21,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240813490] [2019-10-22 08:56:21,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,682 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:21,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:21,696 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:21,804 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-10-22 08:56:21,869 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:21,869 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:21,870 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:21,870 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:21,870 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:21,870 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:21,870 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:21,870 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:21,870 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex02.c_Iteration1_Loop [2019-10-22 08:56:21,871 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:21,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:21,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:21,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:21,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,035 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:22,036 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:22,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:22,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:22,053 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_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:22,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:22,065 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:22,071 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_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:22,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:22,081 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:22,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:22,095 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,114 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:22,116 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:22,116 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:22,117 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:22,117 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:22,117 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:22,117 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:22,118 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:22,119 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:22,119 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex02.c_Iteration1_Loop [2019-10-22 08:56:22,119 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:22,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:22,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:22,239 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:22,244 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:22,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:22,248 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:22,249 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:22,249 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:22,249 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:22,253 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:22,253 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:22,264 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:22,264 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:22,265 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:22,265 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:22,266 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:22,266 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:22,268 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:22,268 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:22,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:22,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:56:22,278 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:22,278 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:22,279 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:22,279 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 08:56:22,279 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:22,280 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 08:56:22,280 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:22,293 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:22,299 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:22,299 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:56:22,302 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:22,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:22,302 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:22,303 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:56:22,306 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:22,335 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:22,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:22,345 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:22,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:22,374 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:56:22,375 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-10-22 08:56:22,424 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-10-22 08:56:22,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:56:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-10-22 08:56:22,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:56:22,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:56:22,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:56:22,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:22,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-10-22 08:56:22,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:22,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2019-10-22 08:56:22,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:56:22,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:56:22,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-10-22 08:56:22,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:22,444 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 08:56:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-10-22 08:56:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-10-22 08:56:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:56:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-10-22 08:56:22,470 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:22,471 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:22,471 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:22,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-10-22 08:56:22,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 08:56:22,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:22,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:22,472 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:56:22,472 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:56:22,472 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L10-2 assume !!(main_~i~0 > 0); 63#L10 [2019-10-22 08:56:22,472 INFO L793 eck$LassoCheckResult]: Loop: 63#L10 assume !(5 != main_~i~0); 64#L10-2 assume !!(main_~i~0 > 0); 63#L10 [2019-10-22 08:56:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:56:22,473 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828006481] [2019-10-22 08:56:22,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,479 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-10-22 08:56:22,480 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783860536] [2019-10-22 08:56:22,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,491 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:22,494 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-10-22 08:56:22,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:22,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264950640] [2019-10-22 08:56:22,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:22,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:22,500 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:22,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:22 BoogieIcfgContainer [2019-10-22 08:56:22,529 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:22,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:22,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:22,530 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:22,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:21" (3/4) ... [2019-10-22 08:56:22,532 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:56:22,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_93085cff-1d34-442d-bcdd-e6dd74a2e809/bin/uautomizer/witness.graphml [2019-10-22 08:56:22,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:22,565 INFO L168 Benchmark]: Toolchain (without parser) took 1590.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -55.1 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:22,566 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:22,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:22,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:22,567 INFO L168 Benchmark]: Boogie Preprocessor took 20.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:22,567 INFO L168 Benchmark]: RCFGBuilder took 176.80 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:22,568 INFO L168 Benchmark]: BuchiAutomizer took 1094.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.6 MB). Peak memory consumption was 94.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:22,568 INFO L168 Benchmark]: Witness Printer took 34.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:22,571 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.46 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 20.85 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 176.80 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: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1094.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.6 MB). Peak memory consumption was 94.6 MB. Max. memory is 11.5 GB. * Witness Printer took 34.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp100 dnf165 smp92 tf105 neg94 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@616e73fd=0, \result=0, i=5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 0 Loop: [L10] COND FALSE !(i != 5) [L9] COND TRUE i > 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...