./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:55,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:55,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:56,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:56,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:56,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:56,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:56,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:56,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:56,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:56,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:56,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:56,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:56,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:56,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:56,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:56,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:56,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:56,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:56,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:56,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:56,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:56,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:56,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:56,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:56,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:56,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:56,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:56,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:56,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:56,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:56,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:56,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:56,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:56,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:56,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:56,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:56,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:56,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:56,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:56,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:56,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:58:56,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:56,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:56,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:56,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:56,037 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:56,038 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:56,038 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:56,038 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:56,038 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:56,038 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:56,038 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:56,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:56,039 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:56,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:56,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:56,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:56,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:56,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:56,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:56,040 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:56,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:56,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:56,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:56,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:56,041 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:56,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:56,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:56,041 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:56,042 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:56,042 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2019-10-22 08:58:56,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:56,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:56,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:56,080 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:56,080 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:56,081 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-10-22 08:58:56,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/data/f15d32f70/4d560f88d080456eac0142d4a3d88f43/FLAGa019d7766 [2019-10-22 08:58:56,479 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:56,479 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-10-22 08:58:56,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/data/f15d32f70/4d560f88d080456eac0142d4a3d88f43/FLAGa019d7766 [2019-10-22 08:58:56,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/data/f15d32f70/4d560f88d080456eac0142d4a3d88f43 [2019-10-22 08:58:56,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:56,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:56,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:56,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:56,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:56,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec30614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56, skipping insertion in model container [2019-10-22 08:58:56,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,513 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:56,527 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:56,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:56,651 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:56,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:56,735 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:56,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56 WrapperNode [2019-10-22 08:58:56,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:56,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:56,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:56,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:56,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:56,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:56,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:56,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:56,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... [2019-10-22 08:58:56,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:56,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:56,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:56,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:56,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:56,974 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:56,974 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:58:56,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56 BoogieIcfgContainer [2019-10-22 08:58:56,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:56,976 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:56,976 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:56,979 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:56,980 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:56,980 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:56" (1/3) ... [2019-10-22 08:58:56,981 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@663bd033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:56, skipping insertion in model container [2019-10-22 08:58:56,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:56,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:56" (2/3) ... [2019-10-22 08:58:56,982 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@663bd033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:56, skipping insertion in model container [2019-10-22 08:58:56,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:56,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56" (3/3) ... [2019-10-22 08:58:56,984 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2019-10-22 08:58:57,028 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:57,028 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:57,028 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:57,029 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:57,029 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:57,029 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:57,029 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:57,029 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:57,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:58:57,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:57,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:57,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:57,067 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:58:57,067 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:57,068 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:57,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:58:57,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:57,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:57,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:57,069 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:58:57,069 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 08:58:57,076 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L21-2true [2019-10-22 08:58:57,076 INFO L793 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 9#L21-2true [2019-10-22 08:58:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:58:57,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717792360] [2019-10-22 08:58:57,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,089 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,176 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-10-22 08:58:57,177 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605423449] [2019-10-22 08:58:57,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,191 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,193 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:58:57,193 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843033355] [2019-10-22 08:58:57,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,210 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,316 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:57,317 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:57,317 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:57,317 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:57,317 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:57,317 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,318 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:57,318 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:57,318 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-10-22 08:58:57,318 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:57,318 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:57,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,437 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:57,440 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:57,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,453 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:57,464 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:57,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:57,479 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:57,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,486 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:57,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:57,501 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,524 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:57,526 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:57,527 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:57,528 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:57,528 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:57,528 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:57,528 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,528 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:57,528 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:57,528 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-10-22 08:58:57,529 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:57,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:57,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,629 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:57,634 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:57,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:57,637 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:57,637 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:57,637 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:57,638 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:57,642 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:57,642 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:57,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:57,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:57,650 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:57,651 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:57,651 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:57,651 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:57,653 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:57,653 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:57,661 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:57,661 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:57,662 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:57,662 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:57,663 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:57,663 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:57,663 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:57,664 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:57,664 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:57,671 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:57,676 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:58:57,676 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:57,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:57,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:57,679 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:57,679 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2019-10-22 08:58:57,682 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:57,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:57,719 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:57,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:57,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:58:57,748 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 08:58:57,801 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 39 transitions. Complement of second has 7 states. [2019-10-22 08:58:57,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:57,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-10-22 08:58:57,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:58:57,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:57,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:58:57,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:57,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:58:57,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:57,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2019-10-22 08:58:57,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:57,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2019-10-22 08:58:57,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:58:57,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:58:57,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-10-22 08:58:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:57,816 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-10-22 08:58:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-10-22 08:58:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-10-22 08:58:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:58:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-10-22 08:58:57,841 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 08:58:57,841 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-10-22 08:58:57,841 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:57,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-10-22 08:58:57,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:57,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:57,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:57,842 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:58:57,842 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:57,842 INFO L791 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-10-22 08:58:57,842 INFO L793 eck$LassoCheckResult]: Loop: 80#L18 assume !(main_~q~0 < main_~p~0); 74#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 75#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-10-22 08:58:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:58:57,843 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874955844] [2019-10-22 08:58:57,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,851 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,851 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-10-22 08:58:57,852 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,852 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933439338] [2019-10-22 08:58:57,852 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,852 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,860 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-10-22 08:58:57,860 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:57,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062748206] [2019-10-22 08:58:57,860 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,861 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:57,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:57,870 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:57,892 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:57,892 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:57,892 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:57,892 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:57,893 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:57,893 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,893 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:57,893 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:57,893 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-10-22 08:58:57,893 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:57,893 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:57,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:57,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:57,944 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:57,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,953 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:57,957 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:57,972 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:57,972 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:57,978 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59c28a6f-4de9-4115-8bf2-29e334f92b99/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:57,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:57,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:58,057 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:58,059 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:58,059 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:58,059 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:58,060 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:58,060 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:58,060 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:58,060 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:58,060 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:58,060 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-10-22 08:58:58,060 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:58,060 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:58,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:58,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:58,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:58,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:58,106 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:58,107 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:58,108 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:58,108 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:58,108 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:58,108 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:58,110 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:58,110 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:58,114 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:58,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:58,115 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:58,115 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:58,115 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:58,115 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:58,117 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:58,117 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:58,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:58,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:58,122 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:58,123 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:58,123 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:58,123 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:58,123 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:58,124 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:58,124 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:58,128 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:58,132 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:58:58,133 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:58,133 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:58,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:58,133 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:58,134 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2019-10-22 08:58:58,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:58,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:58,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:58,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:58,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:58,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:58:58,174 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-10-22 08:58:58,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2019-10-22 08:58:58,201 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 [2019-10-22 08:58:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:58:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-10-22 08:58:58,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:58:58,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:58,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:58:58,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:58,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:58:58,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:58,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2019-10-22 08:58:58,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:58,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2019-10-22 08:58:58,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:58:58,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:58:58,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2019-10-22 08:58:58,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:58,205 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-10-22 08:58:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2019-10-22 08:58:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-10-22 08:58:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:58:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2019-10-22 08:58:58,208 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-10-22 08:58:58,208 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-10-22 08:58:58,208 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:58:58,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2019-10-22 08:58:58,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:58:58,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:58,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:58,209 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:58:58,209 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:58,210 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 151#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 157#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-10-22 08:58:58,210 INFO L793 eck$LassoCheckResult]: Loop: 146#L21 assume !(main_~p~0 < main_~q~0); 147#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 160#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-10-22 08:58:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-10-22 08:58:58,210 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:58,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211201203] [2019-10-22 08:58:58,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,210 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:58,218 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:58,218 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-10-22 08:58:58,218 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:58,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283617251] [2019-10-22 08:58:58,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:58,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:58,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283617251] [2019-10-22 08:58:58,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:58,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:58,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045501657] [2019-10-22 08:58:58,252 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:58:58,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:58,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:58:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:58:58,256 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-10-22 08:58:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:58,273 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-10-22 08:58:58,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:58:58,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2019-10-22 08:58:58,275 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:58,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-10-22 08:58:58,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:58,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:58,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:58,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:58,275 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:58,276 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:58,276 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:58,276 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:58:58,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:58,276 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:58,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:58,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:58 BoogieIcfgContainer [2019-10-22 08:58:58,282 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:58,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:58,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:58,282 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:58,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:56" (3/4) ... [2019-10-22 08:58:58,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:58,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:58,289 INFO L168 Benchmark]: Toolchain (without parser) took 1789.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.1 MB in the beginning and 976.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 102.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,289 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:58,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,290 INFO L168 Benchmark]: Boogie Preprocessor took 17.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:58,291 INFO L168 Benchmark]: RCFGBuilder took 188.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,291 INFO L168 Benchmark]: BuchiAutomizer took 1306.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.2 MB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:58,292 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:58,294 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 188.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1306.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.2 MB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.43 ms. Allocated memory is still 1.2 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 22 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...