./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 687269bb6882b72a3d48999f1e5c55a1d5283a94 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:16:26,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:16:26,999 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:16:27,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:16:27,007 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:16:27,008 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:16:27,008 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:16:27,010 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:16:27,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:16:27,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:16:27,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:16:27,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:16:27,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:16:27,013 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:16:27,014 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:16:27,015 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:16:27,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:16:27,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:16:27,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:16:27,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:16:27,019 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:16:27,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:16:27,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:16:27,022 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:16:27,022 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:16:27,023 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:16:27,023 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:16:27,024 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:16:27,025 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:16:27,025 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:16:27,025 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:16:27,026 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:16:27,026 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:16:27,026 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:16:27,027 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:16:27,027 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:16:27,027 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 12:16:27,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:16:27,039 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:16:27,039 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:16:27,039 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:16:27,040 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 12:16:27,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:16:27,040 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 12:16:27,041 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:16:27,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 12:16:27,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:16:27,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:16:27,042 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 12:16:27,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:16:27,042 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:16:27,042 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 12:16:27,043 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 12:16:27,043 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2018-11-28 12:16:27,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:16:27,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:16:27,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:16:27,078 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:16:27,078 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:16:27,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:16:27,118 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/data/0e57b81f8/c0e70edb0ef249d7be72b2f08e58add5/FLAG9588bfb2f [2018-11-28 12:16:27,512 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:16:27,512 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:16:27,516 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/data/0e57b81f8/c0e70edb0ef249d7be72b2f08e58add5/FLAG9588bfb2f [2018-11-28 12:16:27,527 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/data/0e57b81f8/c0e70edb0ef249d7be72b2f08e58add5 [2018-11-28 12:16:27,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:16:27,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:16:27,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:16:27,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:16:27,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:16:27,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b52991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27, skipping insertion in model container [2018-11-28 12:16:27,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:16:27,550 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:16:27,640 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:16:27,643 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:16:27,652 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:16:27,660 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:16:27,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27 WrapperNode [2018-11-28 12:16:27,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:16:27,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:16:27,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:16:27,661 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:16:27,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:16:27,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:16:27,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:16:27,680 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:16:27,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... [2018-11-28 12:16:27,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:16:27,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:16:27,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:16:27,730 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:16:27,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:27,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:16:27,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:16:27,867 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:16:27,867 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 12:16:27,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:16:27 BoogieIcfgContainer [2018-11-28 12:16:27,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:16:27,868 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 12:16:27,868 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 12:16:27,870 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 12:16:27,871 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:16:27,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 12:16:27" (1/3) ... [2018-11-28 12:16:27,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a0e2f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:16:27, skipping insertion in model container [2018-11-28 12:16:27,872 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:16:27,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:16:27" (2/3) ... [2018-11-28 12:16:27,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a0e2f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:16:27, skipping insertion in model container [2018-11-28 12:16:27,873 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:16:27,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:16:27" (3/3) ... [2018-11-28 12:16:27,874 INFO L375 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:16:27,923 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:16:27,923 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 12:16:27,923 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 12:16:27,923 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 12:16:27,923 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:16:27,923 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:16:27,923 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 12:16:27,924 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:16:27,924 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 12:16:27,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 12:16:27,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:27,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:27,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:27,955 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 12:16:27,955 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:27,955 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 12:16:27,956 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-28 12:16:27,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:27,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:27,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:27,957 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 12:16:27,957 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:27,963 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2018-11-28 12:16:27,963 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2018-11-28 12:16:27,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 12:16:27,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:27,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2018-11-28 12:16:28,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:28,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2018-11-28 12:16:28,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:28,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,153 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:28,154 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:28,154 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:28,154 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:28,155 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:28,155 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:28,155 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:28,155 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:28,155 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 12:16:28,155 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:28,155 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:28,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,302 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:28,302 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:28,306 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:28,337 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:28,337 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:28,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,343 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:28,359 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:28,359 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,362 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:28,365 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:28,365 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,380 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,380 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,399 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:28,399 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:28,432 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:28,433 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:28,433 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:28,433 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:28,433 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:28,433 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:28,433 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:28,433 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:28,433 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:28,434 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 12:16:28,434 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:28,434 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:28,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,498 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:28,501 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:28,502 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:28,503 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:28,503 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:28,503 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:28,503 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:28,505 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:28,506 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:28,511 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:28,512 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:28,512 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:28,512 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:28,512 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:28,513 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:28,514 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:28,514 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:28,520 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:28,520 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:28,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:28,521 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:28,521 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:28,521 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:16:28,521 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:28,522 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:16:28,522 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:28,525 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:28,526 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:28,526 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:28,526 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:28,526 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:28,526 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:28,527 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:28,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:28,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:28,534 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:28,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:28,538 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:28,539 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:28,540 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:28,540 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:28,540 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:28,541 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:28,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:28,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:28,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:28,665 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 [2018-11-28 12:16:28,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-11-28 12:16:28,730 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2018-11-28 12:16:28,731 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 [2018-11-28 12:16:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 12:16:28,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 12:16:28,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:28,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 12:16:28,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:28,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2018-11-28 12:16:28,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:28,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2018-11-28 12:16:28,739 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 12:16:28,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2018-11-28 12:16:28,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-28 12:16:28,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 12:16:28,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-28 12:16:28,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:28,744 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-28 12:16:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-28 12:16:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2018-11-28 12:16:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 12:16:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-11-28 12:16:28,764 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-28 12:16:28,764 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-28 12:16:28,764 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 12:16:28,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2018-11-28 12:16:28,765 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 12:16:28,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:28,765 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:28,765 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:16:28,765 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:28,766 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-28 12:16:28,766 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-28 12:16:28,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 12:16:28,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:28,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2018-11-28 12:16:28,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:28,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2018-11-28 12:16:28,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:28,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:28,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:28,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:28,822 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:28,822 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:28,822 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:28,822 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:28,822 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:28,822 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:28,822 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:28,822 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:28,823 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 12:16:28,823 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:28,823 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:28,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:28,926 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:28,926 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,928 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,928 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:28,947 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:28,947 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,951 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:28,951 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:28,969 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:28,969 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,042 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:29,044 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,044 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,044 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,044 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,044 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:29,045 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,045 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,045 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,045 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 12:16:29,045 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,045 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:29,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,107 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:29,108 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:29,108 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,109 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,109 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,109 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,109 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,110 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:29,111 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:29,114 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:29,115 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,115 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,115 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:29,116 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,116 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,116 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,117 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:29,117 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:29,122 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:29,126 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:29,126 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:29,127 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:29,127 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:29,127 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:29,127 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:29,127 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:29,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:29,150 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 12:16:29,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-11-28 12:16:29,168 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2018-11-28 12:16:29,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-28 12:16:29,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 12:16:29,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 12:16:29,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-28 12:16:29,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2018-11-28 12:16:29,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:29,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2018-11-28 12:16:29,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 12:16:29,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 12:16:29,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-28 12:16:29,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:29,172 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-28 12:16:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-28 12:16:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-28 12:16:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 12:16:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-28 12:16:29,174 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 12:16:29,174 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 12:16:29,174 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 12:16:29,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2018-11-28 12:16:29,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:29,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:29,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:29,175 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 12:16:29,175 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:29,175 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-28 12:16:29,175 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-28 12:16:29,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,176 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2018-11-28 12:16:29,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2018-11-28 12:16:29,182 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2018-11-28 12:16:29,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,232 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,233 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,233 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,233 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,233 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:29,233 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,233 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,233 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,233 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 12:16:29,233 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,233 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:29,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,298 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:29,298 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,300 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:29,300 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,302 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:29,302 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,317 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:29,317 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,331 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:29,331 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,334 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:29,334 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:29,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,415 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:29,416 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,417 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,417 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,417 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,417 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:29,417 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,417 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,417 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,417 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 12:16:29,417 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,418 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:29,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,467 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:29,467 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:29,468 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,468 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,468 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:29,469 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,469 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,469 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,469 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:29,470 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:29,470 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:29,471 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,471 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,471 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,473 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:29,473 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:29,476 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:29,477 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,477 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,477 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:29,478 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,478 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,478 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,479 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:29,479 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:29,483 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:29,486 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:29,487 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:29,487 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:29,487 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:29,487 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:29,488 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 12:16:29,488 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:29,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:29,530 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 [2018-11-28 12:16:29,530 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-28 12:16:29,548 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2018-11-28 12:16:29,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 12:16:29,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 12:16:29,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-28 12:16:29,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-28 12:16:29,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,550 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2018-11-28 12:16:29,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:29,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2018-11-28 12:16:29,552 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 12:16:29,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-28 12:16:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2018-11-28 12:16:29,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:29,553 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2018-11-28 12:16:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2018-11-28 12:16:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-28 12:16:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 12:16:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2018-11-28 12:16:29,555 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 12:16:29,555 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 12:16:29,555 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 12:16:29,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2018-11-28 12:16:29,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 12:16:29,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:29,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:29,556 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 12:16:29,556 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:29,557 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-28 12:16:29,557 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-28 12:16:29,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2018-11-28 12:16:29,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2018-11-28 12:16:29,565 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2018-11-28 12:16:29,570 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:29,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,602 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,602 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,602 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,602 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,602 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:29,602 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,602 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,602 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,602 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-28 12:16:29,602 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,603 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:29,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,645 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:29,645 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,647 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:29,647 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,649 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:29,649 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/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 [2018-11-28 12:16:29,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:29,664 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:29,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:29,805 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:29,807 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,807 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,807 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:29,807 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,807 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,808 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,808 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-28 12:16:29,808 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,808 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:29,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:29,861 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:29,861 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:29,862 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,862 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,862 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:29,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,862 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:16:29,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,863 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:16:29,863 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:29,865 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:29,865 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:29,866 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:29,866 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:29,866 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:29,866 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:29,866 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:29,867 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:29,867 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:29,872 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:29,875 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:29,875 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:29,875 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:29,875 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:29,875 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:29,875 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:29,876 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:29,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:29,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:29,909 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 [2018-11-28 12:16:29,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 12:16:29,927 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2018-11-28 12:16:29,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 12:16:29,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-28 12:16:29,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 12:16:29,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 12:16:29,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:29,929 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2018-11-28 12:16:29,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 12:16:29,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2018-11-28 12:16:29,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 12:16:29,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-11-28 12:16:29,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2018-11-28 12:16:29,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:29,932 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2018-11-28 12:16:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2018-11-28 12:16:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2018-11-28 12:16:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 12:16:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2018-11-28 12:16:29,936 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-28 12:16:29,936 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-28 12:16:29,936 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 12:16:29,936 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2018-11-28 12:16:29,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-28 12:16:29,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:29,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:29,937 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:29,937 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:29,937 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-28 12:16:29,937 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-28 12:16:29,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,937 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2018-11-28 12:16:29,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2018-11-28 12:16:29,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:29,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:29,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2018-11-28 12:16:29,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:29,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:29,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:29,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:29,999 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:29,999 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:29,999 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:29,999 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:29,999 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:29,999 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:29,999 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:29,999 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:29,999 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-28 12:16:29,999 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:29,999 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,037 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,037 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,041 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,058 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:30,058 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,077 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:30,079 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:30,079 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:30,079 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:30,079 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:30,079 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:30,079 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,079 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:30,079 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:30,079 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-28 12:16:30,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:30,079 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,129 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,129 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:30,129 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,130 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,130 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,130 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,130 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,130 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:30,130 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:30,132 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:30,132 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,132 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,132 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:30,132 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,132 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,132 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,133 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:30,133 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:30,135 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:30,137 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:30,137 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:30,137 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:30,137 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:30,138 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:30,138 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:30,138 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:30,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:30,168 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 12:16:30,168 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2018-11-28 12:16:30,179 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2018-11-28 12:16:30,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:30,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 12:16:30,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 12:16:30,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-28 12:16:30,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-28 12:16:30,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2018-11-28 12:16:30,182 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-28 12:16:30,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2018-11-28 12:16:30,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2018-11-28 12:16:30,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-11-28 12:16:30,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2018-11-28 12:16:30,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:30,183 INFO L705 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2018-11-28 12:16:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2018-11-28 12:16:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2018-11-28 12:16:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-28 12:16:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2018-11-28 12:16:30,187 INFO L728 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-28 12:16:30,187 INFO L608 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-28 12:16:30,187 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 12:16:30,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2018-11-28 12:16:30,188 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-28 12:16:30,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:30,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:30,189 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:30,189 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:30,189 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-28 12:16:30,189 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-28 12:16:30,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,189 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2018-11-28 12:16:30,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:30,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2018-11-28 12:16:30,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,196 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:30,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,199 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2018-11-28 12:16:30,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:30,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,222 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:30,222 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:30,222 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:30,222 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:30,223 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:30,223 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,223 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:30,223 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:30,223 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-28 12:16:30,223 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:30,223 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,257 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,257 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,259 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,280 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:30,280 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,345 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:30,347 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:30,347 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:30,347 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:30,347 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:30,347 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:30,347 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,347 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:30,347 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:30,347 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-28 12:16:30,347 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:30,347 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,383 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,383 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:30,383 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,383 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,383 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:30,383 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,383 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,383 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,384 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:30,384 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:30,386 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:30,388 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:30,388 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:30,389 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:30,389 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:30,389 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:30,389 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 12:16:30,389 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:30,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:30,412 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 [2018-11-28 12:16:30,412 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 12:16:30,427 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2018-11-28 12:16:30,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 12:16:30,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 12:16:30,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,428 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:30,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:30,454 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:16:30,455 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 12:16:30,469 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2018-11-28 12:16:30,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 12:16:30,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 12:16:30,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,475 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:30,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:30,497 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:16:30,497 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-28 12:16:30,514 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2018-11-28 12:16:30,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 12:16:30,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-28 12:16:30,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 12:16:30,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 12:16:30,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2018-11-28 12:16:30,518 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2018-11-28 12:16:30,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2018-11-28 12:16:30,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 12:16:30,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 12:16:30,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2018-11-28 12:16:30,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:30,520 INFO L705 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2018-11-28 12:16:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2018-11-28 12:16:30,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2018-11-28 12:16:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-28 12:16:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2018-11-28 12:16:30,523 INFO L728 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-28 12:16:30,523 INFO L608 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-28 12:16:30,523 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 12:16:30,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2018-11-28 12:16:30,524 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2018-11-28 12:16:30,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:30,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:30,524 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 12:16:30,525 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:30,525 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-28 12:16:30,525 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-28 12:16:30,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2018-11-28 12:16:30,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:30,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2018-11-28 12:16:30,530 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:30,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2018-11-28 12:16:30,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:30,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,576 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:30,576 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:30,576 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:30,576 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:30,576 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:30,576 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,576 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:30,576 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:30,577 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-28 12:16:30,577 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:30,577 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,632 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,632 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,639 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,640 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,642 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:30,642 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,658 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,658 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,673 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:30,673 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,678 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,679 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,693 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:30,693 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,697 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:30,697 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:30,715 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:30,812 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:30,813 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:30,813 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:30,813 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:30,813 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:30,813 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:30,813 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:30,813 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:30,814 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:30,814 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-28 12:16:30,814 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:30,814 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:30,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:30,852 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:30,852 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:30,852 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,852 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,852 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:30,853 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,853 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:16:30,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,853 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:16:30,853 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:30,855 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:30,855 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,856 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,856 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,856 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,856 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,857 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:30,857 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:30,858 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:30,859 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,859 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,859 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,859 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,859 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,860 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:30,860 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:30,861 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:30,862 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:30,862 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:30,862 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:30,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:30,862 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:30,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:30,863 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:30,863 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:30,866 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:30,868 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:30,868 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:30,868 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:30,868 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:30,868 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:30,868 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:30,869 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:30,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:30,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:30,922 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 12:16:30,922 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2018-11-28 12:16:30,964 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2018-11-28 12:16:30,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:16:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 12:16:30,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 12:16:30,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 12:16:30,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-28 12:16:30,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:30,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2018-11-28 12:16:30,967 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-28 12:16:30,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2018-11-28 12:16:30,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-28 12:16:30,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2018-11-28 12:16:30,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2018-11-28 12:16:30,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:30,969 INFO L705 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2018-11-28 12:16:30,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2018-11-28 12:16:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2018-11-28 12:16:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-28 12:16:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2018-11-28 12:16:30,977 INFO L728 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-28 12:16:30,978 INFO L608 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-28 12:16:30,978 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 12:16:30,978 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2018-11-28 12:16:30,979 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-28 12:16:30,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:30,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:30,980 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:30,980 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:30,980 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-28 12:16:30,980 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-28 12:16:30,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2018-11-28 12:16:30,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:30,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,987 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2018-11-28 12:16:30,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:30,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2018-11-28 12:16:30,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:30,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:30,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:30,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,046 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:31,046 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:31,046 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:31,046 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:31,046 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:31,046 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,047 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:31,047 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:31,047 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-28 12:16:31,047 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:31,047 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:31,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,099 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:31,100 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,102 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:31,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:31,116 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:31,116 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:31,119 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:31,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:31,271 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:31,273 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:31,273 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:31,273 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:31,273 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:31,273 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:31,273 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:31,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:31,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-28 12:16:31,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:31,273 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:31,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,323 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:31,323 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:31,323 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:31,324 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:31,324 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:31,324 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:31,324 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:31,325 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:31,325 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:31,327 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:31,327 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:31,328 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:31,328 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:31,328 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:31,328 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:31,328 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:31,329 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:31,329 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:31,331 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:31,332 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:31,332 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:31,333 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:31,333 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:31,333 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:31,333 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:31,333 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:31,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:31,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 12:16:31,372 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 12:16:31,457 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2018-11-28 12:16:31,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:16:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 12:16:31,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 12:16:31,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:31,458 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:31,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:31,486 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 12:16:31,486 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 12:16:31,530 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2018-11-28 12:16:31,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:16:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2018-11-28 12:16:31,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 12:16:31,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:31,531 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:31,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:31,567 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 12:16:31,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-28 12:16:31,614 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2018-11-28 12:16:31,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:16:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2018-11-28 12:16:31,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-28 12:16:31,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:31,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2018-11-28 12:16:31,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:31,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2018-11-28 12:16:31,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:31,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2018-11-28 12:16:31,623 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2018-11-28 12:16:31,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2018-11-28 12:16:31,625 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2018-11-28 12:16:31,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2018-11-28 12:16:31,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2018-11-28 12:16:31,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:31,626 INFO L705 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2018-11-28 12:16:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2018-11-28 12:16:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2018-11-28 12:16:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-11-28 12:16:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2018-11-28 12:16:31,635 INFO L728 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-28 12:16:31,635 INFO L608 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-28 12:16:31,635 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-28 12:16:31,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2018-11-28 12:16:31,639 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2018-11-28 12:16:31,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:31,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:31,639 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-28 12:16:31,639 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:16:31,639 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-28 12:16:31,639 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-28 12:16:31,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2018-11-28 12:16:31,640 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:31,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:31,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:31,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2018-11-28 12:16:31,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:31,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:31,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:31,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2018-11-28 12:16:31,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:31,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:31,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:31,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:31,688 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:31,688 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:31,688 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:31,688 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:31,688 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:31,688 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,689 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:31,689 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:31,689 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-28 12:16:31,689 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:31,689 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:31,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,745 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:31,745 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,753 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:31,753 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:31,768 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:31,768 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,771 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:31,771 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:31,773 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:31,773 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,789 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:31,789 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,824 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:31,825 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:31,886 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:31,888 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:31,888 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:31,888 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:31,888 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:31,888 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:31,888 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:31,888 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:31,888 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:31,888 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-28 12:16:31,888 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:31,888 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:31,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:31,925 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:31,925 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:31,926 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:31,926 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:31,926 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:31,926 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:31,926 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:31,927 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:31,927 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:31,928 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:31,929 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:31,929 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:31,929 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:31,929 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:31,929 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:16:31,929 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:31,930 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:16:31,930 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:31,931 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:31,931 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:31,932 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:31,932 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:31,932 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:31,932 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:31,932 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:31,932 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:31,932 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:31,934 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:31,936 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:31,936 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:31,936 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:31,936 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:31,936 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:31,936 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:31,936 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:31,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:31,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:31,976 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-28 12:16:31,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2018-11-28 12:16:32,020 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2018-11-28 12:16:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:16:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-28 12:16:32,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 12:16:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 12:16:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-28 12:16:32,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2018-11-28 12:16:32,025 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 12:16:32,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2018-11-28 12:16:32,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-28 12:16:32,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 12:16:32,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2018-11-28 12:16:32,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:16:32,027 INFO L705 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2018-11-28 12:16:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2018-11-28 12:16:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2018-11-28 12:16:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-11-28 12:16:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2018-11-28 12:16:32,032 INFO L728 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-28 12:16:32,032 INFO L608 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-28 12:16:32,033 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-28 12:16:32,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2018-11-28 12:16:32,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 12:16:32,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:16:32,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:16:32,034 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2018-11-28 12:16:32,034 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 12:16:32,034 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-28 12:16:32,034 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-28 12:16:32,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2018-11-28 12:16:32,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:32,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2018-11-28 12:16:32,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:32,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:32,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:16:32,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2018-11-28 12:16:32,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:16:32,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:16:32,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:16:32,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:16:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:16:32,075 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:32,075 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:32,076 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:32,076 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:32,076 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:16:32,076 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,076 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:32,076 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:32,076 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-28 12:16:32,076 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:32,076 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:32,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,125 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:32,125 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,151 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:32,151 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:32,170 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:32,170 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:32,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:32,194 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:16:32,194 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:16:32,198 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b93773a7-aeb9-4001-8129-0f31ec9f59da/bin-2019/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,215 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:16:32,215 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:16:32,276 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:16:32,278 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:16:32,278 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:16:32,278 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:16:32,278 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:16:32,278 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:16:32,278 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:16:32,278 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:16:32,278 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:16:32,278 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-28 12:16:32,278 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:16:32,278 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:16:32,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:16:32,312 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:16:32,312 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:16:32,312 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:32,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:32,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:32,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:32,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:32,313 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:32,313 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:32,313 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:32,314 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:32,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:32,314 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:32,314 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:32,314 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:32,315 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:16:32,315 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:16:32,315 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:16:32,316 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:16:32,316 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:16:32,316 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:16:32,316 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:16:32,316 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:16:32,316 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:16:32,316 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:16:32,316 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:16:32,317 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:16:32,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:16:32,319 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:16:32,319 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:16:32,319 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:16:32,320 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:16:32,320 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:16:32,320 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:16:32,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:32,352 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 [2018-11-28 12:16:32,352 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 12:16:32,365 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2018-11-28 12:16:32,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 12:16:32,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 12:16:32,367 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,367 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:32,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:32,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:16:32,397 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 12:16:32,415 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2018-11-28 12:16:32,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 12:16:32,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 12:16:32,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,416 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:16:32,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:16:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:16:32,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:16:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:16:32,446 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:16:32,446 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-28 12:16:32,464 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2018-11-28 12:16:32,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:16:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:16:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-28 12:16:32,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-28 12:16:32,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2018-11-28 12:16:32,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 12:16:32,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:16:32,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2018-11-28 12:16:32,469 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:16:32,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2018-11-28 12:16:32,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 12:16:32,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 12:16:32,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 12:16:32,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:16:32,469 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:16:32,469 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:16:32,469 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:16:32,470 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-28 12:16:32,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:16:32,470 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:16:32,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 12:16:32,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 12:16:32 BoogieIcfgContainer [2018-11-28 12:16:32,475 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 12:16:32,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:16:32,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:16:32,476 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:16:32,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:16:27" (3/4) ... [2018-11-28 12:16:32,479 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:16:32,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:16:32,480 INFO L168 Benchmark]: Toolchain (without parser) took 4950.64 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 348.1 MB). Free memory was 958.0 MB in the beginning and 1.2 GB in the end (delta: -232.4 MB). Peak memory consumption was 115.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,481 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 984.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:16:32,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.16 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.27 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:16:32,482 INFO L168 Benchmark]: Boogie Preprocessor took 49.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -210.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,483 INFO L168 Benchmark]: RCFGBuilder took 137.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,483 INFO L168 Benchmark]: BuchiAutomizer took 4607.81 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -53.4 MB). Peak memory consumption was 135.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,484 INFO L168 Benchmark]: Witness Printer took 3.76 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:16:32,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 984.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 130.16 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.27 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -210.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4607.81 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -53.4 MB). Peak memory consumption was 135.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.76 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 3.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...