./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 e334e85dd18553afecc96b27cf49a003304cbca8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:19,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:19,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:19,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:19,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:19,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:19,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:19,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:19,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:19,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:19,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:19,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:19,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:19,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:19,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:19,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:19,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:19,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:19,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:19,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:19,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:19,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:19,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:19,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:19,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:19,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:19,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:19,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:19,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:19,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:19,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:19,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:19,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:19,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:19,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:19,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:19,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:19,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:19,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:19,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:19,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:19,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:49:19,914 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:19,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:19,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:19,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:19,920 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:19,920 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:49:19,920 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:49:19,920 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:49:19,920 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:49:19,921 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:49:19,921 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:49:19,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:19,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:49:19,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:19,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:19,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:49:19,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:49:19,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:49:19,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:19,923 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:49:19,923 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:19,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:49:19,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:19,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:19,924 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:49:19,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:19,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:19,924 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:49:19,925 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:49:19,925 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-11-25 08:49:20,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:20,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:20,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:20,072 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:20,073 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:20,074 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-25 08:49:20,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/data/5015a32d3/0d191e4c1d9c4b668bb93884cbecff70/FLAGe57fb5382 [2019-11-25 08:49:20,565 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:20,566 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-25 08:49:20,571 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/data/5015a32d3/0d191e4c1d9c4b668bb93884cbecff70/FLAGe57fb5382 [2019-11-25 08:49:20,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/data/5015a32d3/0d191e4c1d9c4b668bb93884cbecff70 [2019-11-25 08:49:20,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:20,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:20,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:20,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:20,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:20,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:20" (1/1) ... [2019-11-25 08:49:20,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe35f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:20, skipping insertion in model container [2019-11-25 08:49:20,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:20" (1/1) ... [2019-11-25 08:49:20,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:20,999 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:21,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:21,192 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:21,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:21,284 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:21,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21 WrapperNode [2019-11-25 08:49:21,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:21,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:21,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:21,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:21,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:21,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:21,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:21,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:21,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... [2019-11-25 08:49:21,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:21,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:21,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:21,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:21,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:21,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:21,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:21,528 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:49:21,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:21 BoogieIcfgContainer [2019-11-25 08:49:21,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:21,529 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:49:21,530 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:49:21,532 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:49:21,533 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:49:21,533 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:49:20" (1/3) ... [2019-11-25 08:49:21,536 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cad67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:49:21, skipping insertion in model container [2019-11-25 08:49:21,537 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:49:21,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:21" (2/3) ... [2019-11-25 08:49:21,538 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cad67ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:49:21, skipping insertion in model container [2019-11-25 08:49:21,538 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:49:21,538 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:21" (3/3) ... [2019-11-25 08:49:21,540 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-11-25 08:49:21,582 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:49:21,582 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:49:21,582 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:49:21,582 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:21,582 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:21,583 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:49:21,583 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:21,583 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:49:21,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:49:21,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:21,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:49:21,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:49:21,615 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:49:21,615 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:49:21,615 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:49:21,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:49:21,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:21,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:49:21,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:49:21,617 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:49:21,617 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:49:21,624 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2019-11-25 08:49:21,624 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2019-11-25 08:49:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-25 08:49:21,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:21,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418258958] [2019-11-25 08:49:21,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-25 08:49:21,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:21,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964510041] [2019-11-25 08:49:21,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,727 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-25 08:49:21,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:21,728 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101875825] [2019-11-25 08:49:21,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:21,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:21,798 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:21,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:21,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:21,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:21,799 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:49:21,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:21,799 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:21,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:21,799 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-25 08:49:21,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:21,800 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:21,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:21,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:21,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:21,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:21,996 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:21,997 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:22,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:49:22,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:22,024 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:22,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:49:22,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:22,037 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:22,059 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:22,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:49:22,085 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,214 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:49:22,215 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:22,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:22,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:22,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:22,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:49:22,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:22,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:22,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-11-25 08:49:22,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:22,216 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:22,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,341 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:22,346 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:22,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:22,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:22,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:22,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:22,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:22,378 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:49:22,379 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,387 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:22,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:22,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:22,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:22,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:22,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:22,413 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:49:22,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 [2019-11-25 08:49:22,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:22,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:22,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:49:22,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:22,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:22,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:22,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:49:22,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:49:22,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:49:22,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:49:22,449 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:22,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:49:22,456 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:49:22,456 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,457 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-11-25 08:49:22,461 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:49:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:22,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:22,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:22,529 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:22,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:22,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:49:22,547 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-25 08:49:22,583 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-25 08:49:22,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:49:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:49:22,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:49:22,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:22,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:49:22,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:22,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-25 08:49:22,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:22,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-25 08:49:22,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:22,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-25 08:49:22,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:49:22,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-25 08:49:22,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-25 08:49:22,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:49:22,598 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-25 08:49:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-25 08:49:22,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:49:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:49:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-25 08:49:22,622 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-25 08:49:22,622 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-25 08:49:22,622 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:49:22,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-25 08:49:22,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:22,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:49:22,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:49:22,623 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:49:22,623 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:49:22,623 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2019-11-25 08:49:22,624 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2019-11-25 08:49:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:22,624 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-25 08:49:22,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:22,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597494080] [2019-11-25 08:49:22,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:22,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597494080] [2019-11-25 08:49:22,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:22,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:49:22,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542674734] [2019-11-25 08:49:22,659 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:49:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:22,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-25 08:49:22,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:22,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334255566] [2019-11-25 08:49:22,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:22,667 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:22,699 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:22,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:22,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:22,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:22,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:49:22,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:22,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:22,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-25 08:49:22,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:22,701 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:22,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,783 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:22,783 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:22,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:22,796 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:22,801 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 [2019-11-25 08:49:22,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:22,815 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 [2019-11-25 08:49:22,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:49:22,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:49:22,980 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:49:22,982 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:22,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:22,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:22,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:22,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:49:22,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:22,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:22,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:22,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-11-25 08:49:22,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:22,983 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:22,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:22,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,078 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:23,078 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:23,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:23,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:23,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:23,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:23,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:23,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:49:23,107 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:23,129 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:23,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:23,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:49:23,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:23,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:23,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:23,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:49:23,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:49:23,155 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:49:23,155 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:23,168 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:49:23,168 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:49:23,168 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:49:23,168 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2019-11-25 08:49:23,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,212 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,213 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:49:23,214 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:49:23,228 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-25 08:49:23,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:49:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:49:23,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:49:23,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-25 08:49:23,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:49:23,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-25 08:49:23,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:23,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-25 08:49:23,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:49:23,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:49:23,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-25 08:49:23,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:49:23,233 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-25 08:49:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-25 08:49:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:49:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:49:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-25 08:49:23,235 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-25 08:49:23,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:23,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:49:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:23,239 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2019-11-25 08:49:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:23,249 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-11-25 08:49:23,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:23,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-11-25 08:49:23,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:23,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2019-11-25 08:49:23,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:49:23,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:49:23,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-25 08:49:23,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:49:23,251 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-25 08:49:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-25 08:49:23,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:49:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:49:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-25 08:49:23,253 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:49:23,254 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:49:23,254 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:49:23,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-25 08:49:23,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:49:23,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:49:23,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:49:23,255 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-11-25 08:49:23,255 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:49:23,255 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2019-11-25 08:49:23,255 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2019-11-25 08:49:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2019-11-25 08:49:23,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:23,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83648177] [2019-11-25 08:49:23,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:49:23,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83648177] [2019-11-25 08:49:23,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439852420] [2019-11-25 08:49:23,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:49:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:49:23,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-25 08:49:23,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-11-25 08:49:23,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428694414] [2019-11-25 08:49:23,335 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:49:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-25 08:49:23,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:23,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206233135] [2019-11-25 08:49:23,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,342 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:23,362 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:23,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:23,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:23,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:23,363 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:49:23,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:23,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:23,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-25 08:49:23,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:23,363 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:23,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,469 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:23,469 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:49:23,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:23,483 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 [2019-11-25 08:49:23,487 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:23,487 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:23,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:23,508 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:23,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:49:23,533 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:49:23,702 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:23,702 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:23,702 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:23,702 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:23,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:49:23,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:23,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:23,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-11-25 08:49:23,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:23,703 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:23,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:23,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:23,781 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:23,800 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:23,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:23,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:23,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:23,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:23,806 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:49:23,806 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:49:23,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 [2019-11-25 08:49:23,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:23,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:23,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:49:23,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:23,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:23,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:23,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:49:23,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:49:23,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:49:23,832 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:49:23,832 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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 [2019-11-25 08:49:23,840 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:49:23,840 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:49:23,840 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:49:23,840 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-11-25 08:49:23,842 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:49:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,872 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,873 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:49:23,873 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-25 08:49:23,880 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-25 08:49:23,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:49:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:49:23,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-25 08:49:23,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,881 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:49:23,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,914 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,915 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:49:23,915 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-25 08:49:23,922 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-11-25 08:49:23,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:49:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:49:23,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-25 08:49:23,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,923 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:49:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:23,950 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:23,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:23,951 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 1 loop predicates [2019-11-25 08:49:23,951 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-25 08:49:23,959 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2019-11-25 08:49:23,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:49:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:49:23,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-25 08:49:23,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-25 08:49:23,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:49:23,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:23,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-11-25 08:49:23,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:49:23,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2019-11-25 08:49:23,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:49:23,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:49:23,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-25 08:49:23,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:49:23,965 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-25 08:49:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-25 08:49:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2019-11-25 08:49:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:49:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-25 08:49:23,966 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-25 08:49:23,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:23,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:23,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:49:23,967 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2019-11-25 08:49:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:23,976 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-25 08:49:23,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:23,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-25 08:49:23,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:49:23,978 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2019-11-25 08:49:23,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:49:23,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-25 08:49:23,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-25 08:49:23,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:49:23,978 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-25 08:49:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-25 08:49:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-11-25 08:49:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:49:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-25 08:49:23,980 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-25 08:49:23,980 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-25 08:49:23,980 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:49:23,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-25 08:49:23,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:49:23,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:49:23,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:49:23,981 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:49:23,981 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-11-25 08:49:23,981 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2019-11-25 08:49:23,981 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2019-11-25 08:49:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-11-25 08:49:23,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:23,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611788264] [2019-11-25 08:49:23,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,990 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2019-11-25 08:49:23,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:23,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242719594] [2019-11-25 08:49:23,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:23,998 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2019-11-25 08:49:23,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:23,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318735896] [2019-11-25 08:49:23,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:24,010 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:24,063 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:24,063 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:24,063 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:24,063 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:24,063 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:49:24,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:24,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:24,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-25 08:49:24,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:24,064 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:24,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,160 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:24,160 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:24,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:49:24,170 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:24,171 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:24,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:24,184 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 [2019-11-25 08:49:24,192 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:49:24,192 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:24,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:49:24,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:49:24,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:49:24,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:49:24,255 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:49:24,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:49:24,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:49:24,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:49:24,255 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:49:24,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,255 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:49:24,255 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:49:24,255 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-11-25 08:49:24,255 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:49:24,256 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:49:24,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:49:24,373 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:49:24,373 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:24,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:24,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:24,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:49:24,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:24,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:24,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:24,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:49:24,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,386 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:24,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:49:24,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:49:24,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:49:24,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:49:24,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:49:24,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:49:24,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:49:24,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,397 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:49:24,399 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:49:24,399 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_38cdd152-e0ca-4168-96dd-1af4c4b69496/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) [2019-11-25 08:49:24,402 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:49:24,402 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:49:24,402 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:49:24,403 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:49:24,408 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:49:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:24,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:49:24,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:24,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:49:24,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:49:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:24,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:49:24,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-11-25 08:49:24,477 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2019-11-25 08:49:24,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:49:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:49:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-25 08:49:24,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-25 08:49:24,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:24,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:49:24,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:24,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-25 08:49:24,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:49:24,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-11-25 08:49:24,480 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:49:24,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-25 08:49:24,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:49:24,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:49:24,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:49:24,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:49:24,480 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:49:24,480 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:49:24,480 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:49:24,480 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:49:24,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:49:24,481 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:49:24,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:49:24,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:49:24 BoogieIcfgContainer [2019-11-25 08:49:24,486 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:49:24,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:24,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:24,487 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:24,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:21" (3/4) ... [2019-11-25 08:49:24,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:49:24,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:24,492 INFO L168 Benchmark]: Toolchain (without parser) took 3521.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -204.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:24,493 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:24,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:24,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.31 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:24,494 INFO L168 Benchmark]: Boogie Preprocessor took 17.48 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. [2019-11-25 08:49:24,495 INFO L168 Benchmark]: RCFGBuilder took 196.44 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:24,495 INFO L168 Benchmark]: BuchiAutomizer took 2956.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:24,496 INFO L168 Benchmark]: Witness Printer took 4.22 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. [2019-11-25 08:49:24,499 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.31 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.48 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 196.44 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2956.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...