./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/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 32bit --witnessprinter.graph.data.programhash 67bb0790f696b3c18eb630bed2fc34fee971c82b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:52:25,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:25,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:25,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:25,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:25,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:25,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:25,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:25,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:25,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:25,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:25,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:25,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:25,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:25,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:25,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:25,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:25,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:25,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:25,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:25,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:25,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:25,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:25,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:25,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:25,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:25,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:25,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:25,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:25,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:25,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:25,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:25,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:25,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:25,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:25,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:25,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:25,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:25,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:25,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:52:25,729 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:25,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:25,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:25,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:25,730 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:25,731 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:52:25,731 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:52:25,731 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:52:25,731 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:52:25,731 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:52:25,732 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:52:25,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:25,732 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:52:25,732 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:25,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:25,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:52:25,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:25,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:52:25,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:52:25,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:52:25,734 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:52:25,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:25,734 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:52:25,734 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:25,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:52:25,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:25,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:25,735 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:52:25,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:25,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:25,736 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:52:25,737 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:52:25,737 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_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2019-11-25 08:52:25,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:25,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:25,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:25,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:25,922 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:25,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-25 08:52:25,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/data/d53ff4d47/f42b9686ef0046d8b2a185e42d52b38f/FLAGabef1bd8a [2019-11-25 08:52:26,365 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:26,366 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-25 08:52:26,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/data/d53ff4d47/f42b9686ef0046d8b2a185e42d52b38f/FLAGabef1bd8a [2019-11-25 08:52:26,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/data/d53ff4d47/f42b9686ef0046d8b2a185e42d52b38f [2019-11-25 08:52:26,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:26,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:26,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:26,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:26,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:26,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:26" (1/1) ... [2019-11-25 08:52:26,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397ec9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:26, skipping insertion in model container [2019-11-25 08:52:26,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:26" (1/1) ... [2019-11-25 08:52:26,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:26,799 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:26,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:26,946 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:27,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:27,031 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:27,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27 WrapperNode [2019-11-25 08:52:27,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:27,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:27,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:27,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:27,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:27,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:27,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:27,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:27,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... [2019-11-25 08:52:27,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:27,346 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:27,346 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:52:27,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:27 BoogieIcfgContainer [2019-11-25 08:52:27,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:27,348 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:52:27,348 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:52:27,351 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:52:27,351 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:27,352 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:52:26" (1/3) ... [2019-11-25 08:52:27,352 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60d35ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:27, skipping insertion in model container [2019-11-25 08:52:27,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:27,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:27" (2/3) ... [2019-11-25 08:52:27,353 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60d35ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:27, skipping insertion in model container [2019-11-25 08:52:27,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:27,354 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:27" (3/3) ... [2019-11-25 08:52:27,355 INFO L371 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2019-11-25 08:52:27,390 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:52:27,390 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:52:27,390 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:52:27,391 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:27,391 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:27,391 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:52:27,391 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:27,391 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:52:27,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-25 08:52:27,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:52:27,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:27,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:27,426 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:52:27,426 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:27,426 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:52:27,427 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-25 08:52:27,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:52:27,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:27,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:27,429 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:52:27,429 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:27,436 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 14#L14true assume !!(main_~l~0 > 0); 3#L15true assume !!(main_~l~0 < 1000000); 7#L16true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 15#L17-3true [2019-11-25 08:52:27,436 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 8#L18-2true assume !true; 4#L18-3true assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 5#L17-2true main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2019-11-25 08:52:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2019-11-25 08:52:27,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:27,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716641501] [2019-11-25 08:52:27,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,520 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1683322, now seen corresponding path program 1 times [2019-11-25 08:52:27,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:27,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710186167] [2019-11-25 08:52:27,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:27,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710186167] [2019-11-25 08:52:27,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:27,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:52:27,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257939812] [2019-11-25 08:52:27,550 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:27,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:27,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:52:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:52:27,563 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-25 08:52:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:27,568 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2019-11-25 08:52:27,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:52:27,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-25 08:52:27,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:52:27,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2019-11-25 08:52:27,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:52:27,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:52:27,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-25 08:52:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:27,576 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-25 08:52:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-25 08:52:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-25 08:52:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:52:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-25 08:52:27,596 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-25 08:52:27,596 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-25 08:52:27,596 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:52:27,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-25 08:52:27,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:52:27,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:27,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:27,598 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:52:27,598 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:27,598 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 42#L14 assume !!(main_~l~0 > 0); 39#L15 assume !!(main_~l~0 < 1000000); 40#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 38#L17-3 [2019-11-25 08:52:27,598 INFO L796 eck$LassoCheckResult]: Loop: 38#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 43#L18-2 assume !(main_~i~0 < main_~n~0); 36#L18-3 assume 0 != main_#t~nondet5;havoc main_#t~nondet5;main_~l~0 := 1 + main_~l~0; 37#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 38#L17-3 [2019-11-25 08:52:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 2 times [2019-11-25 08:52:27,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:27,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693227399] [2019-11-25 08:52:27,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,622 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:27,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1668907, now seen corresponding path program 1 times [2019-11-25 08:52:27,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:27,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745020774] [2019-11-25 08:52:27,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,639 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1295853045, now seen corresponding path program 1 times [2019-11-25 08:52:27,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:27,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213969468] [2019-11-25 08:52:27,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:27,658 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:27,762 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:27,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:27,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:27,763 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:27,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:27,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:27,770 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:27,770 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:27,770 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-25 08:52:27,770 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:27,771 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:27,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:27,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:27,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:27,929 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:27,930 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:27,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:27,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:27,950 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:27,950 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=7} Honda state: {ULTIMATE.start_main_#t~nondet5=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:27,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:27,962 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:27,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:27,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:28,256 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:28,258 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:28,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:28,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:28,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:28,259 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:28,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:28,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:28,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2019-11-25 08:52:28,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:28,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:28,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,382 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:28,386 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/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) [2019-11-25 08:52:28,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:28,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:28,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:28,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:28,397 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:52:28,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:28,403 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:52:28,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,408 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,422 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:28,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:28,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:28,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:28,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:28,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:28,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:28,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:28,437 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:28,444 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:28,444 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/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 [2019-11-25 08:52:28,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:28,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:28,470 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:28,471 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-11-25 08:52:28,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:28,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:28,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:28,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:28,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:28,560 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 [2019-11-25 08:52:28,560 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-25 08:52:28,595 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 17 states and 23 transitions. Complement of second has 4 states. [2019-11-25 08:52:28,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-25 08:52:28,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:52:28,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:28,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:52:28,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:28,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 8 letters. [2019-11-25 08:52:28,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:28,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2019-11-25 08:52:28,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:28,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 19 transitions. [2019-11-25 08:52:28,602 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:52:28,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:52:28,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2019-11-25 08:52:28,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:28,603 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-25 08:52:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2019-11-25 08:52:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-25 08:52:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:52:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-25 08:52:28,605 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-25 08:52:28,605 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-25 08:52:28,605 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:52:28,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2019-11-25 08:52:28,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:28,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:28,606 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:28,607 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:52:28,607 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:52:28,607 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 117#L14 assume !!(main_~l~0 > 0); 110#L15 assume !!(main_~l~0 < 1000000); 111#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 118#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 112#L18-2 [2019-11-25 08:52:28,608 INFO L796 eck$LassoCheckResult]: Loop: 112#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 113#L4 assume !(0 == __VERIFIER_assert_~cond); 119#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 112#L18-2 [2019-11-25 08:52:28,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:28,608 INFO L82 PathProgramCache]: Analyzing trace with hash 29742509, now seen corresponding path program 1 times [2019-11-25 08:52:28,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:28,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994348666] [2019-11-25 08:52:28,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,618 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:28,619 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 1 times [2019-11-25 08:52:28,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:28,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34351519] [2019-11-25 08:52:28,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,635 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:28,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854647, now seen corresponding path program 1 times [2019-11-25 08:52:28,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:28,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189411206] [2019-11-25 08:52:28,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:28,660 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:28,692 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:28,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:28,692 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:28,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:28,693 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:28,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:28,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:28,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-25 08:52:28,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:28,694 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:28,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,789 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:28,789 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:28,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:28,808 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:28,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:28,834 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:28,900 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:28,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:28,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:28,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:28,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:28,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:28,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:28,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:28,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2019-11-25 08:52:28,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:28,901 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:28,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:28,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:29,000 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:29,001 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:29,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:29,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:29,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:29,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:29,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:29,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:29,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:29,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,025 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:29,030 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:52:29,030 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:29,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:29,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:29,043 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:29,043 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:29,046 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,094 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 [2019-11-25 08:52:29,094 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:52:29,112 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2019-11-25 08:52:29,113 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 [2019-11-25 08:52:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-25 08:52:29,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-25 08:52:29,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:52:29,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-25 08:52:29,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2019-11-25 08:52:29,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:29,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 20 states and 26 transitions. [2019-11-25 08:52:29,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:52:29,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:52:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-11-25 08:52:29,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:29,119 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-25 08:52:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-11-25 08:52:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2019-11-25 08:52:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:52:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-25 08:52:29,121 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-25 08:52:29,121 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-25 08:52:29,121 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:52:29,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-11-25 08:52:29,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:29,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:29,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:29,123 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:52:29,123 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:52:29,124 INFO L794 eck$LassoCheckResult]: Stem: 210#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post4, main_#t~nondet5, main_#t~post3, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~l~0 := main_#t~nondet2;havoc main_#t~nondet2; 211#L14 assume !!(main_~l~0 > 0); 200#L15 assume !!(main_~l~0 < 1000000); 201#L16 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 209#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 207#L18-2 assume !(main_~i~0 < main_~n~0); 202#L18-3 assume !(0 != main_#t~nondet5);havoc main_#t~nondet5; 203#L17-2 main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 205#L18-2 [2019-11-25 08:52:29,124 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 206#L4 assume !(0 == __VERIFIER_assert_~cond); 212#L4-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-2 [2019-11-25 08:52:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1516740677, now seen corresponding path program 1 times [2019-11-25 08:52:29,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:29,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207580941] [2019-11-25 08:52:29,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:29,141 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash 61795, now seen corresponding path program 2 times [2019-11-25 08:52:29,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:29,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748245982] [2019-11-25 08:52:29,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:29,162 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2129380705, now seen corresponding path program 1 times [2019-11-25 08:52:29,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:29,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368075443] [2019-11-25 08:52:29,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368075443] [2019-11-25 08:52:29,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739610366] [2019-11-25 08:52:29,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:29,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-25 08:52:29,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680466774] [2019-11-25 08:52:29,310 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:29,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:29,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:29,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:29,310 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:29,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:29,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:29,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-25 08:52:29,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:29,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:29,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:29,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:29,391 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:29,392 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:29,406 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:29,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:29,426 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,570 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:29,573 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:29,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:29,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:29,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:29,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:29,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:29,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:29,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2019-11-25 08:52:29,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:29,574 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:29,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:29,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:29,660 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:29,660 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:29,670 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:29,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:29,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:29,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:29,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:29,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:29,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:29,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,675 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/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) [2019-11-25 08:52:29,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:29,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:29,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:29,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:29,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:29,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:29,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:29,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,701 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:29,705 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:29,705 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1b2c83a8-7beb-4608-b2c8-91cc1a0efea2/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:29,710 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:29,710 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:29,710 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:29,710 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-11-25 08:52:29,713 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,783 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 [2019-11-25 08:52:29,784 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:52:29,802 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-25 08:52:29,802 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 [2019-11-25 08:52:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-25 08:52:29,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-25 08:52:29,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,803 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:52:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:52:29,854 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:52:29,869 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 32 transitions. Complement of second has 7 states. [2019-11-25 08:52:29,869 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 [2019-11-25 08:52:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-25 08:52:29,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-25 08:52:29,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,870 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:52:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:29,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:29,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:29,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:29,909 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:52:29,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:52:29,924 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 22 states and 27 transitions. Complement of second has 6 states. [2019-11-25 08:52:29,925 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 [2019-11-25 08:52:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:29,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-25 08:52:29,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-25 08:52:29,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-25 08:52:29,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-25 08:52:29,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:29,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2019-11-25 08:52:29,929 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:29,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-25 08:52:29,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:29,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:29,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:29,930 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:29,930 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:29,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:29,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:52:29,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:52:29,931 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2019-11-25 08:52:29,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:29,931 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:52:29,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:52:29,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:52:29,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:29,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:52:29,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:29,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:29,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:29,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:29,933 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:29,933 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:29,933 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:29,934 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:52:29,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:52:29,934 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:29,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:52:29,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:52:29 BoogieIcfgContainer [2019-11-25 08:52:29,940 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:52:29,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:29,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:29,941 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:29,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:27" (3/4) ... [2019-11-25 08:52:29,945 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:52:29,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:29,947 INFO L168 Benchmark]: Toolchain (without parser) took 3174.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.7 MB in the beginning and 876.9 MB in the end (delta: 67.8 MB). Peak memory consumption was 231.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:29,947 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:29,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -209.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:29,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:29,949 INFO L168 Benchmark]: Boogie Preprocessor took 15.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:29,949 INFO L168 Benchmark]: RCFGBuilder took 266.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:29,950 INFO L168 Benchmark]: BuchiAutomizer took 2592.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.9 MB in the end (delta: 257.1 MB). Peak memory consumption was 257.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:29,950 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory is still 876.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:29,953 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 259.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -209.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 266.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2592.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.9 MB in the end (delta: 257.1 MB). Peak memory consumption was 257.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory is still 876.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 70 SDtfs, 66 SDslu, 28 SDs, 0 SdLazy, 41 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf98 lsp94 ukn100 mio100 lsp100 div100 bol100 ite121 ukn100 eq169 hnf91 smp70 dnf100 smp100 tf106 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...