./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:26:15,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:26:15,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:26:15,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:26:15,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:26:15,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:26:15,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:26:15,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:26:15,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:26:15,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:26:15,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:26:15,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:26:15,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:26:15,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:26:15,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:26:15,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:26:15,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:26:15,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:26:15,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:26:15,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:26:15,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:26:15,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:26:15,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:26:15,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:26:15,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:26:15,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:26:15,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:26:15,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:26:15,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:26:15,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:26:15,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:26:15,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:26:15,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:26:15,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:26:15,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:26:15,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:26:15,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:26:15,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:26:15,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:26:15,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:26:15,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:26:15,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 10:26:15,609 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:26:15,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:26:15,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:26:15,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:26:15,612 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:26:15,612 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 10:26:15,612 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 10:26:15,612 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 10:26:15,612 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 10:26:15,613 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 10:26:15,613 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 10:26:15,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:26:15,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:26:15,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:26:15,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:26:15,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 10:26:15,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 10:26:15,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 10:26:15,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:26:15,615 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 10:26:15,615 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:26:15,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 10:26:15,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:26:15,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:26:15,616 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 10:26:15,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:26:15,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:26:15,616 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 10:26:15,617 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 10:26:15,617 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_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2019-11-20 10:26:15,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:26:15,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:26:15,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:26:15,817 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:26:15,818 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:26:15,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-11-20 10:26:15,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/data/13fb48597/b38f0011d72c4560bd65b1181c6c7824/FLAG797a2f20b [2019-11-20 10:26:16,260 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:26:16,261 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2019-11-20 10:26:16,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/data/13fb48597/b38f0011d72c4560bd65b1181c6c7824/FLAG797a2f20b [2019-11-20 10:26:16,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/data/13fb48597/b38f0011d72c4560bd65b1181c6c7824 [2019-11-20 10:26:16,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:26:16,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:26:16,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:26:16,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:26:16,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:26:16,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37194310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16, skipping insertion in model container [2019-11-20 10:26:16,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,690 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:26:16,703 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:26:16,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:26:16,833 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:26:16,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:26:16,918 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:26:16,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16 WrapperNode [2019-11-20 10:26:16,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:26:16,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:26:16,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:26:16,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:26:16,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:26:16,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:26:16,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:26:16,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:26:16,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... [2019-11-20 10:26:16,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:26:16,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:26:16,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:26:16,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:26:16,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:26:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:26:17,181 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:26:17,181 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 10:26:17,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:26:17 BoogieIcfgContainer [2019-11-20 10:26:17,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:26:17,183 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 10:26:17,183 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 10:26:17,186 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 10:26:17,187 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:26:17,187 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:26:16" (1/3) ... [2019-11-20 10:26:17,188 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61640358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:26:17, skipping insertion in model container [2019-11-20 10:26:17,188 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:26:17,188 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:16" (2/3) ... [2019-11-20 10:26:17,189 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61640358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:26:17, skipping insertion in model container [2019-11-20 10:26:17,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:26:17,189 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:26:17" (3/3) ... [2019-11-20 10:26:17,191 INFO L371 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2019-11-20 10:26:17,248 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 10:26:17,248 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 10:26:17,248 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 10:26:17,249 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:26:17,249 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:26:17,249 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 10:26:17,249 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:26:17,249 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 10:26:17,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 10:26:17,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 10:26:17,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:17,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:17,287 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:26:17,287 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:17,287 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 10:26:17,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 10:26:17,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 10:26:17,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:17,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:17,289 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:26:17,289 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:17,296 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2019-11-20 10:26:17,297 INFO L796 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume !(main_~x~0 > 0); 5#L27true assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 10#L27-2true [2019-11-20 10:26:17,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:17,302 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 10:26:17,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:17,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148657522] [2019-11-20 10:26:17,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,400 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2019-11-20 10:26:17,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:17,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698438174] [2019-11-20 10:26:17,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2019-11-20 10:26:17,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:17,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724379882] [2019-11-20 10:26:17,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:17,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:17,497 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:17,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:17,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:17,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:17,498 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:17,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:17,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:17,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-11-20 10:26:17,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:17,499 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:17,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:17,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:17,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:17,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:17,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:17,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:17,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:17,740 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:17,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:17,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:17,749 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:17,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:17,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:17,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:17,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:17,776 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:17,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:17,800 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:17,815 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:17,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:17,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:17,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:17,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:17,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:17,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:17,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2019-11-20 10:26:17,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:17,817 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:17,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:17,981 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:17,985 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:17,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:17,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:17,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:17,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:17,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,001 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:18,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:26:18,006 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:18,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:18,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:18,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,050 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:18,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:26:18,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:18,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,069 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 10:26:18,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,073 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 10:26:18,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:18,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,097 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:18,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:18,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:18,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:18,108 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:26:18,108 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/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 [2019-11-20 10:26:18,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:18,119 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:18,119 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:18,120 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:26:18,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:26:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:18,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:18,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:18,199 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:18,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:18,226 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 [2019-11-20 10:26:18,227 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-11-20 10:26:18,284 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2019-11-20 10:26:18,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:26:18,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-20 10:26:18,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 10:26:18,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:18,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 10:26:18,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:18,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-20 10:26:18,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:18,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2019-11-20 10:26:18,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 10:26:18,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2019-11-20 10:26:18,297 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 10:26:18,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 10:26:18,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2019-11-20 10:26:18,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:18,299 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2019-11-20 10:26:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2019-11-20 10:26:18,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-20 10:26:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 10:26:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-11-20 10:26:18,325 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-20 10:26:18,325 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-20 10:26:18,325 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 10:26:18,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2019-11-20 10:26:18,326 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 10:26:18,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:18,326 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:18,327 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 10:26:18,327 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:18,327 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2019-11-20 10:26:18,327 INFO L796 eck$LassoCheckResult]: Loop: 94#L19 assume main_~x~0 > 0; 95#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 96#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2019-11-20 10:26:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 10:26:18,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:18,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900555327] [2019-11-20 10:26:18,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,335 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2019-11-20 10:26:18,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:18,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493267419] [2019-11-20 10:26:18,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2019-11-20 10:26:18,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:18,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018449801] [2019-11-20 10:26:18,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:18,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:18,396 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:18,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:18,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:18,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:18,397 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:18,397 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:18,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:18,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-11-20 10:26:18,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:18,397 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:18,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,523 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:18,523 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:18,537 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 [2019-11-20 10:26:18,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:18,542 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:18,561 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:18,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:18,584 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,590 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:18,590 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/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) [2019-11-20 10:26:18,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:18,613 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:18,632 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,696 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:18,699 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:18,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:18,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:18,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:18,699 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:18,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,699 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:18,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:18,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2019-11-20 10:26:18,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:18,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:18,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:18,820 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:18,820 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:18,837 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:26:18,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,869 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:18,870 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,874 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:18,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:18,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:18,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:18,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:18,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:18,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:18,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:18,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:18,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:18,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:18,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:18,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:26:18,911 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:18,915 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:18,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:18,916 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:18,916 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 10:26:18,920 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:18,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:18,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:18,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:18,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:18,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:18,980 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 [2019-11-20 10:26:18,980 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-20 10:26:19,013 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 42 states and 70 transitions. Complement of second has 7 states. [2019-11-20 10:26:19,013 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 [2019-11-20 10:26:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 10:26:19,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-20 10:26:19,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 10:26:19,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 10:26:19,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2019-11-20 10:26:19,018 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 10:26:19,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2019-11-20 10:26:19,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-20 10:26:19,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-20 10:26:19,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2019-11-20 10:26:19,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:19,021 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-11-20 10:26:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2019-11-20 10:26:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-11-20 10:26:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 10:26:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2019-11-20 10:26:19,026 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-11-20 10:26:19,026 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2019-11-20 10:26:19,026 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 10:26:19,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2019-11-20 10:26:19,027 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 10:26:19,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:19,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:19,028 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 10:26:19,028 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:19,029 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2019-11-20 10:26:19,029 INFO L796 eck$LassoCheckResult]: Loop: 192#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 209#L19 assume !(main_~x~0 > 0); 208#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 192#L27-2 [2019-11-20 10:26:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,029 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-11-20 10:26:19,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,030 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188971698] [2019-11-20 10:26:19,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2019-11-20 10:26:19,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707002681] [2019-11-20 10:26:19,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,049 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2019-11-20 10:26:19,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643251182] [2019-11-20 10:26:19,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:19,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643251182] [2019-11-20 10:26:19,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:19,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 10:26:19,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955414770] [2019-11-20 10:26:19,134 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:19,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:19,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:19,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:19,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:19,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:19,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:19,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-11-20 10:26:19,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:19,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:19,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,244 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:19,244 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,248 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:19,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:19,275 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:19,275 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Exception during sending of exit command (exit): Broken pipe Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,289 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,296 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:19,296 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,306 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:19,320 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,330 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:19,331 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:19,332 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:19,332 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:19,332 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:19,332 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:19,332 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,332 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:19,332 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:19,332 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2019-11-20 10:26:19,332 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:19,332 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:19,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,427 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:19,427 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:19,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:19,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,435 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,444 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:19,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,446 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 10:26:19,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,447 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 10:26:19,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,451 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,461 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:19,461 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,465 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:19,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:19,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,475 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:19,477 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 10:26:19,478 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,484 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:19,484 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:19,484 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:19,484 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:26:19,494 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:19,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:19,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:19,531 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:19,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:19,546 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 [2019-11-20 10:26:19,546 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2019-11-20 10:26:19,572 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 43 states and 69 transitions. Complement of second has 7 states. [2019-11-20 10:26:19,573 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 [2019-11-20 10:26:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 10:26:19,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 10:26:19,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 10:26:19,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 10:26:19,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:19,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2019-11-20 10:26:19,576 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-20 10:26:19,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2019-11-20 10:26:19,577 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-11-20 10:26:19,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-20 10:26:19,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2019-11-20 10:26:19,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:19,578 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2019-11-20 10:26:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2019-11-20 10:26:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-20 10:26:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 10:26:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2019-11-20 10:26:19,582 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2019-11-20 10:26:19,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 10:26:19,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:26:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:19,586 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2019-11-20 10:26:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:19,616 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2019-11-20 10:26:19,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:26:19,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2019-11-20 10:26:19,618 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2019-11-20 10:26:19,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2019-11-20 10:26:19,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-20 10:26:19,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-20 10:26:19,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2019-11-20 10:26:19,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:19,619 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-20 10:26:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2019-11-20 10:26:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-20 10:26:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 10:26:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2019-11-20 10:26:19,622 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-11-20 10:26:19,622 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2019-11-20 10:26:19,622 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 10:26:19,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2019-11-20 10:26:19,623 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 10:26:19,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:19,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:19,624 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 10:26:19,624 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:19,624 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2019-11-20 10:26:19,624 INFO L796 eck$LassoCheckResult]: Loop: 393#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 390#L19 assume main_~x~0 > 0; 391#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2019-11-20 10:26:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2019-11-20 10:26:19,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409725961] [2019-11-20 10:26:19,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,633 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2019-11-20 10:26:19,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807132473] [2019-11-20 10:26:19,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2019-11-20 10:26:19,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:19,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462743226] [2019-11-20 10:26:19,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:19,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:19,684 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:19,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:19,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:19,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:19,684 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:19,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:19,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:19,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-11-20 10:26:19,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:19,685 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:19,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,753 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:19,753 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,757 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:19,765 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,771 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:19,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:19,785 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:19,800 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,807 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:19,809 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:19,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:19,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:19,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:19,809 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:19,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:19,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:19,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2019-11-20 10:26:19,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:19,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:19,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:19,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:19,897 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:19,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:19,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,907 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:19,917 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,920 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,934 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:19,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:19,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:19,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:19,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:19,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:19,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:19,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,940 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:19,942 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 10:26:19,942 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:19,946 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:19,946 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:19,946 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:19,946 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:26:19,948 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:19,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:19,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:19,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:19,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:19,986 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 [2019-11-20 10:26:19,986 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2019-11-20 10:26:19,999 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 35 states and 52 transitions. Complement of second has 6 states. [2019-11-20 10:26:20,000 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 [2019-11-20 10:26:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 10:26:20,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 10:26:20,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 10:26:20,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 10:26:20,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2019-11-20 10:26:20,002 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 10:26:20,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2019-11-20 10:26:20,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 10:26:20,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-20 10:26:20,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2019-11-20 10:26:20,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:20,003 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2019-11-20 10:26:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2019-11-20 10:26:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-20 10:26:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 10:26:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2019-11-20 10:26:20,006 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-11-20 10:26:20,006 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2019-11-20 10:26:20,006 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 10:26:20,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2019-11-20 10:26:20,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 10:26:20,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:20,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:20,008 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-20 10:26:20,008 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:20,008 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2019-11-20 10:26:20,008 INFO L796 eck$LassoCheckResult]: Loop: 502#L19 assume main_~x~0 > 0; 504#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 501#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2019-11-20 10:26:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,008 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2019-11-20 10:26:20,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970677815] [2019-11-20 10:26:20,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2019-11-20 10:26:20,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920607424] [2019-11-20 10:26:20,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,048 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2019-11-20 10:26:20,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059749396] [2019-11-20 10:26:20,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,062 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,092 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:20,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:20,092 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:20,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:20,093 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:20,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:20,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:20,093 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-11-20 10:26:20,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:20,093 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:20,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,161 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:20,161 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:20,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,169 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:20,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:20,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,180 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:20,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:20,240 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:20,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:20,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:20,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:20,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:20,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:20,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:20,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2019-11-20 10:26:20,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:20,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:20,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,322 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:20,323 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:20,332 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,333 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:20,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:20,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:20,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,342 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:20,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:20,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,349 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:20,349 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:20,351 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:20,353 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:26:20,353 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,356 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:20,356 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:20,356 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:20,356 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 10:26:20,358 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:26:20,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:20,400 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 [2019-11-20 10:26:20,400 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-20 10:26:20,427 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2019-11-20 10:26:20,428 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 [2019-11-20 10:26:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 10:26:20,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 10:26:20,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,429 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:26:20,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:20,467 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 [2019-11-20 10:26:20,467 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-20 10:26:20,500 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2019-11-20 10:26:20,501 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 [2019-11-20 10:26:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 10:26:20,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 10:26:20,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,502 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:26:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:20,529 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 [2019-11-20 10:26:20,529 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-11-20 10:26:20,551 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 59 states and 92 transitions. Complement of second has 8 states. [2019-11-20 10:26:20,551 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 [2019-11-20 10:26:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:26:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 10:26:20,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 10:26:20,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 10:26:20,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-20 10:26:20,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:20,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2019-11-20 10:26:20,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:26:20,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2019-11-20 10:26:20,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 10:26:20,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 10:26:20,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2019-11-20 10:26:20,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:26:20,556 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-20 10:26:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2019-11-20 10:26:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2019-11-20 10:26:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 10:26:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-20 10:26:20,557 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-20 10:26:20,557 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-20 10:26:20,557 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 10:26:20,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-11-20 10:26:20,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:26:20,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:26:20,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:26:20,558 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-20 10:26:20,558 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:26:20,559 INFO L794 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2019-11-20 10:26:20,559 INFO L796 eck$LassoCheckResult]: Loop: 814#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 815#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 824#L19 assume !(main_~x~0 > 0); 814#L27 [2019-11-20 10:26:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,559 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2019-11-20 10:26:20,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750465059] [2019-11-20 10:26:20,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,570 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2019-11-20 10:26:20,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042594147] [2019-11-20 10:26:20,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,575 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2019-11-20 10:26:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:26:20,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581490651] [2019-11-20 10:26:20,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:26:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:26:20,586 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:26:20,606 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:20,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:20,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:20,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:20,607 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:26:20,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:20,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:20,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-11-20 10:26:20,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:20,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:20,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,680 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:20,680 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:20,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-5} Honda state: {ULTIMATE.start_main_#t~nondet4=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:20,695 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,703 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:20,703 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:26:20,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:26:20,715 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:26:20,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:26:20,766 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:26:20,767 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:26:20,767 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:26:20,767 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:26:20,767 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:26:20,767 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:26:20,767 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,767 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:26:20,767 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:26:20,767 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2019-11-20 10:26:20,768 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:26:20,768 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:26:20,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:26:20,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:26:20,854 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:20,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,859 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 10:26:20,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,862 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 10:26:20,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:26:20,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:20,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,870 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:26:20,870 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:26:20,873 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:20,879 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:20,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:20,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:20,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:26:20,897 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:26:20,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:26:20,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:26:20,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:26:20,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:26:20,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:26:20,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:26:20,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:26:20,902 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:26:20,907 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 10:26:20,907 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eb916a2-b2f7-4e02-828e-5e41cf9c1ec9/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 10:26:20,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:26:20,928 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:26:20,928 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:26:20,928 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:26:20,930 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:26:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:20,971 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:20,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:20,982 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 [2019-11-20 10:26:20,982 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-20 10:26:20,999 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2019-11-20 10:26:21,001 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 [2019-11-20 10:26:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:26:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 10:26:21,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:26:21,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:21,002 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:26:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:21,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:21,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:21,021 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:21,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:21,028 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 [2019-11-20 10:26:21,028 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-20 10:26:21,046 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2019-11-20 10:26:21,047 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 [2019-11-20 10:26:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:26:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 10:26:21,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:26:21,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:21,048 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:26:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:21,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:26:21,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:21,076 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:21,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:21,086 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 [2019-11-20 10:26:21,086 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-20 10:26:21,105 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 4 states. [2019-11-20 10:26:21,107 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 [2019-11-20 10:26:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:26:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 10:26:21,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:26:21,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:21,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 10:26:21,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:21,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-20 10:26:21,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:26:21,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-11-20 10:26:21,110 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:26:21,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2019-11-20 10:26:21,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 10:26:21,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 10:26:21,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 10:26:21,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 10:26:21,110 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:26:21,110 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:26:21,110 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:26:21,111 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 10:26:21,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:26:21,111 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:26:21,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 10:26:21,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:26:21 BoogieIcfgContainer [2019-11-20 10:26:21,119 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 10:26:21,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:26:21,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:26:21,120 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:26:21,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:26:17" (3/4) ... [2019-11-20 10:26:21,124 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:26:21,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:26:21,126 INFO L168 Benchmark]: Toolchain (without parser) took 4450.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 943.3 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:26:21,126 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:26:21,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:26:21,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:26:21,129 INFO L168 Benchmark]: Boogie Preprocessor took 18.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:26:21,130 INFO L168 Benchmark]: RCFGBuilder took 215.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:26:21,132 INFO L168 Benchmark]: BuchiAutomizer took 3935.77 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -35.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:26:21,133 INFO L168 Benchmark]: Witness Printer took 4.47 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. [2019-11-20 10:26:21,140 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 243.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 215.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3935.77 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -35.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.47 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 73 SDslu, 32 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...