./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 0.1.25-f470102 [2019-12-07 14:12:15,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:12:15,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:12:15,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:12:15,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:12:15,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:12:15,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:12:15,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:12:15,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:12:15,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:12:15,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:12:15,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:12:15,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:12:15,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:12:15,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:12:15,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:12:15,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:12:15,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:12:15,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:12:15,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:12:15,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:12:15,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:12:15,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:12:15,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:12:15,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:12:15,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:12:15,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:12:15,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:12:15,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:12:15,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:12:15,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:12:15,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:12:15,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:12:15,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:12:15,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:12:15,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:12:15,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:12:15,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:12:15,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:12:15,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:12:15,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:12:15,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 14:12:15,996 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:12:15,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:12:15,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:12:15,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:12:15,997 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:12:15,997 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:12:15,998 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:12:15,998 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:12:15,998 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:12:15,998 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:12:15,998 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:12:15,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:12:15,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:12:15,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:12:15,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:12:15,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:12:15,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:12:16,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:12:16,000 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:12:16,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:12:16,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:12:16,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:12:16,001 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:12:16,001 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:12:16,002 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:16,099 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:12:16,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:12:16,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:12:16,111 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:12:16,112 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:12:16,112 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.10.c [2019-12-07 14:12:16,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/data/f4147ae81/2b0285048a0d4945b475f9b941359add/FLAG8c0fd5641 [2019-12-07 14:12:16,555 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:12:16,556 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/sv-benchmarks/c/termination-restricted-15/b.10.c [2019-12-07 14:12:16,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/data/f4147ae81/2b0285048a0d4945b475f9b941359add/FLAG8c0fd5641 [2019-12-07 14:12:16,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/data/f4147ae81/2b0285048a0d4945b475f9b941359add [2019-12-07 14:12:16,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:12:16,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:12:16,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:12:16,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:12:16,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:12:16,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc7a4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16, skipping insertion in model container [2019-12-07 14:12:16,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:12:16,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:12:16,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:12:16,698 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:12:16,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:12:16,757 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:12:16,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16 WrapperNode [2019-12-07 14:12:16,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:12:16,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:12:16,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:12:16,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:12:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:12:16,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:12:16,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:12:16,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:12:16,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... [2019-12-07 14:12:16,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:12:16,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:12:16,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:12:16,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:12:16,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:12:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:12:16,919 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:12:16,920 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 14:12:16,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:12:16 BoogieIcfgContainer [2019-12-07 14:12:16,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:12:16,921 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:12:16,921 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:12:16,923 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:12:16,924 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:12:16,924 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:12:16" (1/3) ... [2019-12-07 14:12:16,924 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5af0fea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:12:16, skipping insertion in model container [2019-12-07 14:12:16,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:12:16,925 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:12:16" (2/3) ... [2019-12-07 14:12:16,925 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5af0fea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:12:16, skipping insertion in model container [2019-12-07 14:12:16,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:12:16,925 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:12:16" (3/3) ... [2019-12-07 14:12:16,926 INFO L371 chiAutomizerObserver]: Analyzing ICFG b.10.c [2019-12-07 14:12:16,955 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:12:16,955 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:12:16,955 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:12:16,955 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:12:16,955 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:12:16,955 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:12:16,955 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:12:16,955 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:12:16,964 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:12:16,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:16,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:12:16,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:12:16,981 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:12:16,981 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:12:16,981 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:12:16,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:12:16,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:16,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:12:16,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:12:16,983 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:12:16,983 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:12:16,987 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L15-2true [2019-12-07 14:12:16,988 INFO L796 eck$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 [2019-12-07 14:12:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 14:12:16,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:16,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438318384] [2019-12-07 14:12:16,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,058 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 14:12:17,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3780797] [2019-12-07 14:12:17,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,070 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,071 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 14:12:17,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114467532] [2019-12-07 14:12:17,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,081 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,133 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:12:17,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:12:17,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:12:17,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:12:17,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:12:17,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:12:17,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:12:17,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2019-12-07 14:12:17,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:12:17,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:12:17,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,227 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:12:17,228 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:17,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:12:17,240 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:17,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:12:17,247 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:17,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,251 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:17,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:12:17,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,269 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:12:17,270 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:12:17,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:12:17,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:12:17,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:12:17,271 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:12:17,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:12:17,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:12:17,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration1_Loop [2019-12-07 14:12:17,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:12:17,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:12:17,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,318 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:12:17,322 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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 [2019-12-07 14:12:17,325 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 14:12:17,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:12:17,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:12:17,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:12:17,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:12:17,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:12:17,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:12:17,335 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 14:12:17,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:12:17,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:12:17,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:12:17,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:12:17,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:12:17,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:12:17,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:12:17,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:12:17,346 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 14:12:17,346 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:12:17,350 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:12:17,350 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:12:17,350 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 14:12:17,353 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:12:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:12:17,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:12:17,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:12:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:12:17,383 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:12:17,384 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:12:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:12:17,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 14:12:17,397 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 14:12:17,428 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. [2019-12-07 14:12:17,428 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 [2019-12-07 14:12:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:12:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-12-07 14:12:17,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 14:12:17,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 14:12:17,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 14:12:17,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2019-12-07 14:12:17,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:17,437 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 10 states and 15 transitions. [2019-12-07 14:12:17,438 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 14:12:17,438 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 14:12:17,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-12-07 14:12:17,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:12:17,439 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-12-07 14:12:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-12-07 14:12:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-12-07 14:12:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 14:12:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-12-07 14:12:17,456 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 14:12:17,456 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-12-07 14:12:17,456 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:12:17,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-12-07 14:12:17,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:17,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:12:17,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:12:17,457 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:12:17,457 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:12:17,457 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 68#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 69#L12 [2019-12-07 14:12:17,458 INFO L796 eck$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 [2019-12-07 14:12:17,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 14:12:17,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330558309] [2019-12-07 14:12:17,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,468 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-12-07 14:12:17,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666723304] [2019-12-07 14:12:17,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-12-07 14:12:17,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712586306] [2019-12-07 14:12:17,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,492 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,524 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:12:17,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:12:17,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:12:17,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:12:17,525 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:12:17,525 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:12:17,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:12:17,525 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2019-12-07 14:12:17,525 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:12:17,525 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:12:17,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,598 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:12:17,598 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,606 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:12:17,606 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:12:17,614 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:12:17,618 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:12:17,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:12:17,633 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:12:17,634 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:12:17,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:12:17,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:12:17,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:12:17,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:12:17,635 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:12:17,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:12:17,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.10.c_Iteration2_Loop [2019-12-07 14:12:17,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:12:17,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:12:17,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:12:17,711 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:12:17,711 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,714 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 14:12:17,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:12:17,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:12:17,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:12:17,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:12:17,717 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:12:17,717 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:12:17,720 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 14:12:17,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:12:17,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:12:17,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:12:17,725 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:12:17,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:12:17,727 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:12:17,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:12:17,730 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:12:17,734 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 14:12:17,735 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_0c4dc961-43fc-41e9-8ae5-7b18ceeeefbb/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:12:17,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:12:17,741 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:12:17,742 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:12:17,742 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 14:12:17,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:12:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:12:17,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:12:17,764 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:12:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:12:17,768 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:12:17,768 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:12:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:12:17,791 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 [2019-12-07 14:12:17,791 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 14:12:17,813 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. [2019-12-07 14:12:17,813 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 [2019-12-07 14:12:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:12:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-12-07 14:12:17,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 14:12:17,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 14:12:17,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 14:12:17,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:12:17,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-12-07 14:12:17,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:17,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 24 states and 35 transitions. [2019-12-07 14:12:17,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 14:12:17,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 14:12:17,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2019-12-07 14:12:17,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:12:17,818 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-12-07 14:12:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2019-12-07 14:12:17,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-12-07 14:12:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 14:12:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-12-07 14:12:17,821 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 14:12:17,821 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-12-07 14:12:17,821 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:12:17,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-12-07 14:12:17,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 14:12:17,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:12:17,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:12:17,823 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 14:12:17,823 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 14:12:17,823 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 153#L15-2 assume !!(((main_~x~0 >= 0 && main_~y~0 < 2147483647 - main_~x~0) || (main_~x~0 < 0 && main_~y~0 > -2147483648 - main_~x~0)) && main_~x~0 + main_~y~0 > 0); 163#L12 assume !(main_~x~0 > 0); 147#L15 [2019-12-07 14:12:17,823 INFO L796 eck$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 [2019-12-07 14:12:17,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,823 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 14:12:17,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264433831] [2019-12-07 14:12:17,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:12:17,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:12:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:12:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-12-07 14:12:17,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:12:17,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161437473] [2019-12-07 14:12:17,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:12:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:12:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:12:17,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161437473] [2019-12-07 14:12:17,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:12:17,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:12:17,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63560408] [2019-12-07 14:12:17,859 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 14:12:17,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:12:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:12:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:12:17,862 INFO L87 Difference]: Start difference. First operand 20 states and 31 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-12-07 14:12:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:12:17,880 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2019-12-07 14:12:17,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:12:17,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2019-12-07 14:12:17,881 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:12:17,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:12:17,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:12:17,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:12:17,882 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:12:17,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:12:17,882 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:12:17,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 14:12:17,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:12:17 BoogieIcfgContainer [2019-12-07 14:12:17,887 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:12:17,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:12:17,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:12:17,888 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:12:17,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:12:16" (3/4) ... [2019-12-07 14:12:17,890 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:12:17,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:12:17,892 INFO L168 Benchmark]: Toolchain (without parser) took 1320.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 949.0 MB in the beginning and 905.9 MB in the end (delta: 43.1 MB). Peak memory consumption was 146.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:12:17,892 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:12:17,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:12:17,893 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:12:17,893 INFO L168 Benchmark]: Boogie Preprocessor took 11.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:12:17,893 INFO L168 Benchmark]: RCFGBuilder took 128.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:12:17,894 INFO L168 Benchmark]: BuchiAutomizer took 966.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 905.9 MB in the end (delta: 175.6 MB). Peak memory consumption was 175.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:12:17,894 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.1 GB. Free memory is still 905.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:12:17,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 964.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 949.0 MB in the beginning and 1.1 GB in the end (delta: -149.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.89 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 128.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 966.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 905.9 MB in the end (delta: 175.6 MB). Peak memory consumption was 175.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.1 GB. Free memory is still 905.9 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 0.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...