./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.10.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/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 65c77d618a9e810a6bfd209782657510debb85fd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:54,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:54,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:54,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:54,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:54,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:54,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:54,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:54,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:54,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:54,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:54,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:54,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:54,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:54,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:54,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:54,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:54,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:54,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:54,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:54,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:54,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:54,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:54,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:54,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:54,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:54,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:54,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:54,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:54,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:54,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:54,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:54,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:54,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:54,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:54,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:54,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:54,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:54,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:54,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:54,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:54,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:46:54,113 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:54,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:54,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:54,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:54,114 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:54,114 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:46:54,115 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:46:54,115 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:46:54,115 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:46:54,115 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:46:54,115 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:46:54,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:54,116 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:46:54,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:54,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:54,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:46:54,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:46:54,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:46:54,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:54,117 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:46:54,117 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:54,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:46:54,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:54,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:54,118 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:46:54,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:54,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:54,119 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:46:54,119 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:46:54,119 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/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 -> 65c77d618a9e810a6bfd209782657510debb85fd [2019-11-25 08:46:54,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:54,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:54,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:54,318 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:54,319 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:54,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.10.c [2019-11-25 08:46:54,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/data/7cfc39539/27467fc966fc47108a8f803ef339457d/FLAGbc5fe6f12 [2019-11-25 08:46:54,732 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:54,732 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/sv-benchmarks/c/termination-restricted-15/b.10.c [2019-11-25 08:46:54,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/data/7cfc39539/27467fc966fc47108a8f803ef339457d/FLAGbc5fe6f12 [2019-11-25 08:46:55,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/data/7cfc39539/27467fc966fc47108a8f803ef339457d [2019-11-25 08:46:55,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:55,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:55,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:55,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:55,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:55,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ff7129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55, skipping insertion in model container [2019-11-25 08:46:55,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:55,233 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:55,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:55,427 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:55,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:55,511 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:55,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55 WrapperNode [2019-11-25 08:46:55,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:55,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:55,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:55,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:55,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:55,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:55,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:55,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:55,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... [2019-11-25 08:46:55,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:55,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:55,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:55,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:55,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/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 [2019-11-25 08:46:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:55,787 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:55,787 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:46:55,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55 BoogieIcfgContainer [2019-11-25 08:46:55,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:55,789 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:46:55,790 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:46:55,793 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:46:55,795 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,795 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:46:55" (1/3) ... [2019-11-25 08:46:55,796 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a33aebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:55, skipping insertion in model container [2019-11-25 08:46:55,796 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:55" (2/3) ... [2019-11-25 08:46:55,797 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a33aebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:55, skipping insertion in model container [2019-11-25 08:46:55,797 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55" (3/3) ... [2019-11-25 08:46:55,799 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.10.c [2019-11-25 08:46:55,847 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:46:55,848 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:46:55,848 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:46:55,848 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:55,848 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:55,848 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:46:55,849 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:55,849 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:46:55,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:46:55,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:55,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:55,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:55,891 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:55,891 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:55,892 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:46:55,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:46:55,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:55,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:55,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:55,894 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:55,894 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:55,901 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2019-11-25 08:46:55,905 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 6#L12true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 8#L15-2true [2019-11-25 08:46:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:46:55,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:55,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827813096] [2019-11-25 08:46:55,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,003 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-25 08:46:56,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025335397] [2019-11-25 08:46:56,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,021 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-25 08:46:56,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565523391] [2019-11-25 08:46:56,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,036 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,122 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,122 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,122 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,123 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,123 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:56,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,123 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,123 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2019-11-25 08:46:56,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,124 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,274 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,274 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/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 [2019-11-25 08:46:56,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:56,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:56,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:56,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:56,321 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,332 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:56,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:56,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:56,361 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,361 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,362 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:56,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2019-11-25 08:46:56,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,362 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,466 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,471 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,483 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 [2019-11-25 08:46:56,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:56,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:56,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:56,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:56,499 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:56,499 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:56,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,525 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 [2019-11-25 08:46:56,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:56,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:56,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:56,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:56,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:56,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:56,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:56,540 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:46:56,540 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,555 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:56,556 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:56,556 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:56,557 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:56,562 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:56,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:56,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:56,615 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:56,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:56,635 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:56,636 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-25 08:46:56,685 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 5 states. [2019-11-25 08:46:56,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:46:56,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:46:56,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:46:56,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:46:56,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-11-25 08:46:56,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:56,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-11-25 08:46:56,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:46:56,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-25 08:46:56,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-11-25 08:46:56,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:56,701 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-25 08:46:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-11-25 08:46:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-25 08:46:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-25 08:46:56,725 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:46:56,725 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:46:56,725 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:46:56,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-25 08:46:56,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:56,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:56,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:56,727 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:46:56,727 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:46:56,727 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 69#L12 [2019-11-25 08:46:56,727 INFO L796 eck$LassoCheckResult]: Loop: 69#L12 assume !(main_~x~0 > 0); 63#L15 assume main_~y~0 > 0;main_~y~0 := main_~y~0 - 1; 64#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 69#L12 [2019-11-25 08:46:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:46:56,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918005730] [2019-11-25 08:46:56,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,748 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-25 08:46:56,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696341998] [2019-11-25 08:46:56,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,776 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-25 08:46:56,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426137744] [2019-11-25 08:46:56,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,861 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,862 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:56,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2019-11-25 08:46:56,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,862 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,993 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,993 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,998 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:57,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:57,018 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:57,023 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:57,038 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:57,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:57,074 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:57,076 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:57,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:57,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:57,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:57,077 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:57,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:57,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:57,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2019-11-25 08:46:57,078 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:57,078 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:57,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:57,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:57,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:57,218 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:57,218 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,233 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 [2019-11-25 08:46:57,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:57,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:57,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:57,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:57,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:57,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,259 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 [2019-11-25 08:46:57,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:57,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:57,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:57,261 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:46:57,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:57,267 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:46:57,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,274 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:57,295 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:46:57,295 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a81349d2-edac-4d66-bc2d-bf21526d184f/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,318 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:57,318 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:57,318 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:57,318 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:46:57,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,351 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:57,395 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:57,395 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-25 08:46:57,431 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 7 states. [2019-11-25 08:46:57,432 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 [2019-11-25 08:46:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-25 08:46:57,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-25 08:46:57,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:46:57,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-25 08:46:57,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-11-25 08:46:57,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:57,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-11-25 08:46:57,439 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:46:57,439 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:46:57,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-11-25 08:46:57,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:57,440 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-25 08:46:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-11-25 08:46:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-11-25 08:46:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-25 08:46:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-11-25 08:46:57,448 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:46:57,449 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-25 08:46:57,449 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:46:57,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-11-25 08:46:57,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:57,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:57,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:57,453 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:46:57,453 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:46:57,454 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-25 08:46:57,454 INFO L796 eck$LassoCheckResult]: Loop: 147#L15 assume !(main_~y~0 > 0); 148#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 154#L12 assume !(main_~x~0 > 0); 147#L15 [2019-11-25 08:46:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-25 08:46:57,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:57,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937959425] [2019-11-25 08:46:57,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:57,476 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:57,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,478 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-25 08:46:57,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:57,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178812515] [2019-11-25 08:46:57,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:57,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178812515] [2019-11-25 08:46:57,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:57,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:57,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239824538] [2019-11-25 08:46:57,528 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:46:57,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:57,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:57,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:57,532 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-25 08:46:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:57,557 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-11-25 08:46:57,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:57,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-11-25 08:46:57,558 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:57,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-25 08:46:57,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:46:57,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:46:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:46:57,559 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,559 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,560 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,560 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:46:57,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,560 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:57,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:46:57,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:46:57 BoogieIcfgContainer [2019-11-25 08:46:57,569 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:46:57,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:57,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:57,571 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:57,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55" (3/4) ... [2019-11-25 08:46:57,574 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:57,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:57,577 INFO L168 Benchmark]: Toolchain (without parser) took 2384.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.1 MB in the beginning and 901.7 MB in the end (delta: 48.3 MB). Peak memory consumption was 173.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,578 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-11-25 08:46:57,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.85 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. [2019-11-25 08:46:57,583 INFO L168 Benchmark]: Boogie Preprocessor took 13.72 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. [2019-11-25 08:46:57,584 INFO L168 Benchmark]: RCFGBuilder took 235.69 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,584 INFO L168 Benchmark]: BuchiAutomizer took 1780.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.7 MB in the end (delta: 200.5 MB). Peak memory consumption was 200.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,585 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 901.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:57,591 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 317.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.85 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. * Boogie Preprocessor took 13.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 235.69 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1780.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.7 MB in the end (delta: 200.5 MB). Peak memory consumption was 200.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 901.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 20 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 16 SDslu, 11 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax154 hnf98 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq127 hnf96 smp100 dnf132 smp96 tf106 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...