./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/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 222b9e0025989dbea1cdc61cba66ae29f96b0141 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 02:37:18,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:37:18,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:37:18,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:37:18,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:37:18,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:37:18,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:37:18,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:37:18,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:37:18,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:37:18,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:37:18,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:37:18,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:37:18,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:37:18,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:37:18,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:37:18,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:37:18,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:37:18,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:37:18,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:37:18,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:37:18,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:37:18,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:37:18,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:37:18,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:37:18,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:37:18,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:37:18,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:37:18,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:37:18,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:37:18,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:37:18,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:37:18,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:37:18,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:37:18,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:37:18,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:37:18,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:37:18,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:37:18,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:37:18,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:37:18,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:37:18,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 02:37:18,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:37:18,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:37:18,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:37:18,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:37:18,626 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:37:18,626 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 02:37:18,626 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 02:37:18,627 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 02:37:18,627 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 02:37:18,627 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 02:37:18,627 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 02:37:18,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:37:18,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 02:37:18,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:37:18,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:37:18,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 02:37:18,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 02:37:18,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 02:37:18,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:37:18,629 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 02:37:18,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:37:18,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 02:37:18,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:37:18,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:37:18,630 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 02:37:18,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:37:18,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:37:18,641 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 02:37:18,642 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 02:37:18,643 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/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 -> 222b9e0025989dbea1cdc61cba66ae29f96b0141 [2019-11-20 02:37:18,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:37:18,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:37:18,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:37:18,810 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:37:18,811 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:37:18,812 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2019-11-20 02:37:18,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/data/4b88bf054/ab6871ea4bf348208d3fe73c27c7a7ae/FLAG56de85cdc [2019-11-20 02:37:19,289 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:37:19,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2019-11-20 02:37:19,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/data/4b88bf054/ab6871ea4bf348208d3fe73c27c7a7ae/FLAG56de85cdc [2019-11-20 02:37:19,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/data/4b88bf054/ab6871ea4bf348208d3fe73c27c7a7ae [2019-11-20 02:37:19,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:37:19,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:37:19,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:37:19,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:37:19,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:37:19,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649f8f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19, skipping insertion in model container [2019-11-20 02:37:19,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,670 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:37:19,681 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:37:19,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:37:19,807 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:37:19,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:37:19,889 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:37:19,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19 WrapperNode [2019-11-20 02:37:19,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:37:19,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:37:19,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:37:19,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:37:19,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:37:19,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:37:19,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:37:19,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:37:19,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... [2019-11-20 02:37:19,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:37:19,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:37:19,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:37:19,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:37:19,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:37:19,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:37:20,143 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:37:20,143 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 02:37:20,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:37:20 BoogieIcfgContainer [2019-11-20 02:37:20,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:37:20,144 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 02:37:20,144 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 02:37:20,146 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 02:37:20,147 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:37:20,147 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 02:37:19" (1/3) ... [2019-11-20 02:37:20,148 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@313d204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 02:37:20, skipping insertion in model container [2019-11-20 02:37:20,148 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:37:20,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:37:19" (2/3) ... [2019-11-20 02:37:20,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@313d204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 02:37:20, skipping insertion in model container [2019-11-20 02:37:20,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:37:20,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:37:20" (3/3) ... [2019-11-20 02:37:20,150 INFO L371 chiAutomizerObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2019-11-20 02:37:20,189 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 02:37:20,189 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 02:37:20,189 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 02:37:20,190 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:37:20,190 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:37:20,190 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 02:37:20,190 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:37:20,190 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 02:37:20,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 02:37:20,220 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-20 02:37:20,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:37:20,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:37:20,227 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 02:37:20,227 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 02:37:20,227 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 02:37:20,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 02:37:20,228 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-11-20 02:37:20,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:37:20,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:37:20,229 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 02:37:20,229 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 02:37:20,236 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 10#L20true assume main_~y~0 > 0 && main_~x~0 > 0; 6#L21-2true [2019-11-20 02:37:20,236 INFO L796 eck$LassoCheckResult]: Loop: 6#L21-2true assume !!(main_~i~0 > 0);main_~i~0 := main_~i~0 - 1;main_~z~0 := 1 + main_~z~0; 6#L21-2true [2019-11-20 02:37:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-20 02:37:20,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:20,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173564398] [2019-11-20 02:37:20,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,342 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:37:20,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:20,343 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2019-11-20 02:37:20,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:20,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897678826] [2019-11-20 02:37:20,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,355 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:37:20,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-20 02:37:20,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:20,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744492361] [2019-11-20 02:37:20,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:20,373 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:37:20,417 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 02:37:20,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 02:37:20,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 02:37:20,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 02:37:20,418 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 02:37:20,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 02:37:20,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 02:37:20,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2019-11-20 02:37:20,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 02:37:20,419 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 02:37:20,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,568 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 02:37:20,570 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:20,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 02:37:20,592 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 02:37:20,592 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:20,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 02:37:20,609 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 02:37:20,609 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:20,620 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 02:37:20,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 02:37:20,634 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 02:37:20,636 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 02:37:20,636 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 02:37:20,636 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 02:37:20,636 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 02:37:20,636 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 02:37:20,636 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,636 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 02:37:20,636 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 02:37:20,637 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2019-11-20 02:37:20,637 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 02:37:20,637 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 02:37:20,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:20,740 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 02:37:20,745 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/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) [2019-11-20 02:37:20,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 02:37:20,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:37:20,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:37:20,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:37:20,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:37:20,758 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 02:37:20,758 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:20,781 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 Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:37:20,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:37:20,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:37:20,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:37:20,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:37:20,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:37:20,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:37:20,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 02:37:20,791 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 02:37:20,791 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:20,808 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 02:37:20,808 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 02:37:20,808 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 02:37:20,809 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 02:37:20,813 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 02:37:20,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,863 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 02:37:20,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:37:20,878 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 02:37:20,879 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2019-11-20 02:37:20,926 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 28 states and 36 transitions. Complement of second has 6 states. [2019-11-20 02:37:20,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 02:37:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 02:37:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-20 02:37:20,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-20 02:37:20,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:20,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 02:37:20,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:20,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 02:37:20,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:20,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2019-11-20 02:37:20,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 02:37:20,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 6 states and 8 transitions. [2019-11-20 02:37:20,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 02:37:20,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 02:37:20,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2019-11-20 02:37:20,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 02:37:20,952 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-20 02:37:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2019-11-20 02:37:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2019-11-20 02:37:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 02:37:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-20 02:37:20,977 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 02:37:20,977 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 02:37:20,977 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 02:37:20,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-20 02:37:20,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 02:37:20,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:37:20,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:37:20,978 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 02:37:20,979 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 02:37:20,979 INFO L794 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 70#L20 assume main_~y~0 > 0 && main_~x~0 > 0; 72#L21-2 assume !(main_~i~0 > 0); 71#L25-1 [2019-11-20 02:37:20,979 INFO L796 eck$LassoCheckResult]: Loop: 71#L25-1 assume !!(main_~i~0 < main_~y~0);main_~i~0 := 1 + main_~i~0;main_~z~0 := main_~z~0 - 1; 71#L25-1 [2019-11-20 02:37:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash 30887, now seen corresponding path program 1 times [2019-11-20 02:37:20,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:20,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915240929] [2019-11-20 02:37:20,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:37:21,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915240929] [2019-11-20 02:37:21,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:37:21,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 02:37:21,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265679665] [2019-11-20 02:37:21,026 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 02:37:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:21,026 INFO L82 PathProgramCache]: Analyzing trace with hash 55, now seen corresponding path program 1 times [2019-11-20 02:37:21,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:21,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432537625] [2019-11-20 02:37:21,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:37:21,033 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:37:21,053 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 02:37:21,054 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 02:37:21,054 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 02:37:21,054 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 02:37:21,054 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 02:37:21,054 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 02:37:21,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 02:37:21,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2019-11-20 02:37:21,055 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 02:37:21,055 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 02:37:21,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,126 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 02:37:21,127 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:21,135 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 02:37:21,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:21,151 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 02:37:21,159 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 02:37:21,176 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 02:37:21,203 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,345 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 02:37:21,347 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 02:37:21,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 02:37:21,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 02:37:21,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 02:37:21,347 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 02:37:21,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 02:37:21,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 02:37:21,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2019-11-20 02:37:21,347 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 02:37:21,348 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 02:37:21,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:37:21,437 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 02:37:21,437 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 02:37:21,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:37:21,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:37:21,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:37:21,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:37:21,448 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 02:37:21,448 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 02:37:21,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:37:21,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:37:21,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:37:21,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:37:21,479 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 02:37:21,479 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 02:37:21,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:37:21,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:37:21,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:37:21,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:37:21,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:37:21,506 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:37:21,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:37:21,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 02:37:21,511 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 02:37:21,511 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_68c47567-cf18-480b-aacc-dd55eb035f2c/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:37:21,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 02:37:21,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 02:37:21,519 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 02:37:21,519 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:37:21,521 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 02:37:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:21,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 02:37:21,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:21,573 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 02:37:21,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:37:21,574 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 02:37:21,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 02:37:21,580 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 6 states and 8 transitions. Complement of second has 2 states. [2019-11-20 02:37:21,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-20 02:37:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 02:37:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 5 transitions. [2019-11-20 02:37:21,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 02:37:21,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:21,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-20 02:37:21,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:21,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 02:37:21,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:37:21,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 8 transitions. [2019-11-20 02:37:21,583 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 02:37:21,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2019-11-20 02:37:21,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 02:37:21,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 02:37:21,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 02:37:21,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 02:37:21,584 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 02:37:21,584 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 02:37:21,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:21,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:37:21,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:37:21,589 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-11-20 02:37:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:21,591 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 02:37:21,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:37:21,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 02:37:21,592 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 02:37:21,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 02:37:21,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 02:37:21,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 02:37:21,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 02:37:21,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 02:37:21,593 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 02:37:21,593 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 02:37:21,593 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 02:37:21,593 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 02:37:21,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 02:37:21,594 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 02:37:21,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 02:37:21,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 02:37:21 BoogieIcfgContainer [2019-11-20 02:37:21,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 02:37:21,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:37:21,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:37:21,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:37:21,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:37:20" (3/4) ... [2019-11-20 02:37:21,610 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 02:37:21,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:37:21,615 INFO L168 Benchmark]: Toolchain (without parser) took 1955.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 954.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 124.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:37:21,616 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:37:21,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 02:37:21,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:37:21,623 INFO L168 Benchmark]: Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:37:21,624 INFO L168 Benchmark]: RCFGBuilder took 210.70 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:37:21,624 INFO L168 Benchmark]: BuchiAutomizer took 1460.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.1 MB in the end (delta: 156.7 MB). Peak memory consumption was 156.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:37:21,625 INFO L168 Benchmark]: Witness Printer took 7.11 ms. Allocated memory is still 1.2 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:37:21,629 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.17 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 210.70 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1460.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.1 MB in the end (delta: 156.7 MB). Peak memory consumption was 156.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.11 ms. Allocated memory is still 1.2 GB. Free memory is still 954.1 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 i and consists of 4 locations. One deterministic module has affine ranking function -1 * i + y and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...