./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 f560e32afd5a40adf4a98abbf810cb377947c4f4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:03:31,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:03:31,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:03:31,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:03:31,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:03:31,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:03:31,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:03:31,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:03:31,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:03:31,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:03:31,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:03:31,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:03:31,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:03:31,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:03:31,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:03:31,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:03:31,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:03:31,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:03:31,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:03:31,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:03:31,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:03:31,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:03:31,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:03:31,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:03:31,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:03:31,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:03:31,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:03:31,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:03:31,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:03:31,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:03:31,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:03:31,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:03:31,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:03:31,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:03:31,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:03:31,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:03:31,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:03:31,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:03:31,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:03:31,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:03:31,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:03:31,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 14:03:31,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:03:31,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:03:31,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:03:31,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:03:31,760 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:03:31,760 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:03:31,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:03:31,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:03:31,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:03:31,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:03:31,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:03:31,763 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:03:31,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:03:31,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:03:31,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:03:31,763 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:03:31,764 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:03:31,764 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2019-12-07 14:03:31,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:03:31,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:03:31,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:03:31,872 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:03:31,873 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:03:31,873 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-12-07 14:03:31,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/data/d60d73a1f/e5509c680c7a4724a8793b5746734f48/FLAGef6c7dea1 [2019-12-07 14:03:32,266 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:03:32,266 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-12-07 14:03:32,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/data/d60d73a1f/e5509c680c7a4724a8793b5746734f48/FLAGef6c7dea1 [2019-12-07 14:03:32,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/data/d60d73a1f/e5509c680c7a4724a8793b5746734f48 [2019-12-07 14:03:32,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:03:32,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:03:32,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:03:32,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:03:32,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:03:32,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4562956c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32, skipping insertion in model container [2019-12-07 14:03:32,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:03:32,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:03:32,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:03:32,400 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:03:32,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:03:32,453 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:03:32,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32 WrapperNode [2019-12-07 14:03:32,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:03:32,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:03:32,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:03:32,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:03:32,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:03:32,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:03:32,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:03:32,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:03:32,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... [2019-12-07 14:03:32,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:03:32,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:03:32,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:03:32,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:03:32,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:03:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:03:32,612 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:03:32,612 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 14:03:32,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:03:32 BoogieIcfgContainer [2019-12-07 14:03:32,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:03:32,613 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:03:32,613 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:03:32,615 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:03:32,616 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:03:32,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:03:32" (1/3) ... [2019-12-07 14:03:32,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b691e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:03:32, skipping insertion in model container [2019-12-07 14:03:32,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:03:32,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:03:32" (2/3) ... [2019-12-07 14:03:32,617 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b691e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:03:32, skipping insertion in model container [2019-12-07 14:03:32,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:03:32,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:03:32" (3/3) ... [2019-12-07 14:03:32,618 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-12-07 14:03:32,647 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:03:32,648 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:03:32,648 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:03:32,648 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:03:32,648 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:03:32,648 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:03:32,648 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:03:32,648 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:03:32,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:03:32,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:32,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:03:32,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:03:32,673 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:03:32,674 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:03:32,674 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:03:32,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 14:03:32,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:32,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:03:32,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:03:32,675 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:03:32,675 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:03:32,680 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 8#L20-2true [2019-12-07 14:03:32,680 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~i~0 > 0); 10#L20true assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 8#L20-2true [2019-12-07 14:03:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 14:03:32,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:32,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968202650] [2019-12-07 14:03:32,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:32,758 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-12-07 14:03:32,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:32,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986421212] [2019-12-07 14:03:32,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:32,766 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-12-07 14:03:32,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:32,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351028779] [2019-12-07 14:03:32,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:32,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351028779] [2019-12-07 14:03:32,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:03:32,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:03:32,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716190411] [2019-12-07 14:03:32,836 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:32,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:32,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:32,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:32,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:03:32,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:32,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:32,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:32,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-12-07 14:03:32,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:32,838 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:32,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,914 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:32,914 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:32,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:32,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:32,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:03:32,925 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:32,928 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:32,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:32,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:03:32,932 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:32,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:32,936 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:32,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:03:32,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:32,952 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:03:32,953 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:32,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:32,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:32,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:32,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:03:32,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:32,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:32,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:32,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-12-07 14:03:32,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:32,954 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:32,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:32,993 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:32,997 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,001 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 [2019-12-07 14:03:33,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:33,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:33,011 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,015 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 [2019-12-07 14:03:33,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,020 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:33,020 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:33,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,028 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 [2019-12-07 14:03:33,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:33,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:33,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:33,033 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:03:33,036 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 14:03:33,036 INFO L444 ModelExtractionUtils]: 2 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,039 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:03:33,039 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:03:33,039 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:03:33,040 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 14:03:33,043 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:03:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,063 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,063 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,070 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,070 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:33,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:03:33,088 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 14:03:33,121 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 8 states. [2019-12-07 14:03:33,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 14:03:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:03:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2019-12-07 14:03:33,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 14:03:33,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:03:33,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 14:03:33,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-12-07 14:03:33,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:33,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-12-07 14:03:33,131 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 14:03:33,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 14:03:33,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 14:03:33,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:03:33,132 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 14:03:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 14:03:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 14:03:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 14:03:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 14:03:33,149 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 14:03:33,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:03:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:03:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:03:33,152 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2019-12-07 14:03:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:03:33,161 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-12-07 14:03:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:03:33,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-12-07 14:03:33,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:33,162 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2019-12-07 14:03:33,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 14:03:33,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 14:03:33,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-12-07 14:03:33,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:03:33,163 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 14:03:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-12-07 14:03:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 14:03:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:03:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 14:03:33,164 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 14:03:33,164 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 14:03:33,164 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:03:33,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-12-07 14:03:33,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:33,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:03:33,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:03:33,165 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 14:03:33,165 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:03:33,165 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 93#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 94#L20-2 assume !!(main_~i~0 > 0); 97#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 95#L20-2 [2019-12-07 14:03:33,165 INFO L796 eck$LassoCheckResult]: Loop: 95#L20-2 assume !!(main_~i~0 > 0); 96#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 95#L20-2 [2019-12-07 14:03:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,165 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-12-07 14:03:33,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827977453] [2019-12-07 14:03:33,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,174 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-12-07 14:03:33,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117675016] [2019-12-07 14:03:33,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-12-07 14:03:33,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438748690] [2019-12-07 14:03:33,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,199 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,199 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:03:33,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-12-07 14:03:33,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,200 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,238 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:33,239 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,245 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:03:33,245 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:03:33,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,255 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:03:33,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,270 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:03:33,271 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,271 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,271 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,271 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:03:33,271 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,271 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,271 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,271 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-12-07 14:03:33,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,271 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,311 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:33,311 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,314 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 [2019-12-07 14:03:33,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,319 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:33,319 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:33,322 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,326 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 [2019-12-07 14:03:33,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:33,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:33,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,338 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 [2019-12-07 14:03:33,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:33,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:33,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:33,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:03:33,346 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 14:03:33,346 INFO L444 ModelExtractionUtils]: 2 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,349 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:03:33,349 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:03:33,349 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:03:33,349 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 14:03:33,351 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:03:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,365 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,368 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,368 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:33,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:03:33,375 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-12-07 14:03:33,384 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-12-07 14:03:33,384 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 [2019-12-07 14:03:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:03:33,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:03:33,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:03:33,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 14:03:33,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 14:03:33,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,385 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-12-07 14:03:33,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:33,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2019-12-07 14:03:33,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:03:33,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 14:03:33,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-12-07 14:03:33,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:03:33,387 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 14:03:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-12-07 14:03:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 14:03:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 14:03:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-12-07 14:03:33,388 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 14:03:33,389 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 14:03:33,389 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:03:33,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-12-07 14:03:33,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:03:33,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:03:33,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:03:33,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-12-07 14:03:33,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:03:33,390 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 148#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 149#L20-2 assume !!(main_~i~0 > 0); 156#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 155#L20-2 assume !!(main_~i~0 > 0); 154#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 150#L20-2 [2019-12-07 14:03:33,390 INFO L796 eck$LassoCheckResult]: Loop: 150#L20-2 assume !!(main_~i~0 > 0); 151#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 150#L20-2 [2019-12-07 14:03:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-12-07 14:03:33,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906766225] [2019-12-07 14:03:33,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,402 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-12-07 14:03:33,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893665352] [2019-12-07 14:03:33,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,408 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,408 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-12-07 14:03:33,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522257900] [2019-12-07 14:03:33,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,424 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,436 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,437 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,437 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:03:33,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-12-07 14:03:33,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,437 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,479 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:33,479 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,485 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:03:33,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,498 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:03:33,499 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:03:33,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-12-07 14:03:33,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,500 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,540 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:33,540 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,543 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 [2019-12-07 14:03:33,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:33,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:33,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:33,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:33,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:33,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:33,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:33,549 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:03:33,553 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:03:33,553 INFO L444 ModelExtractionUtils]: 1 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_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:03:33,557 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:03:33,557 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:03:33,557 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 14:03:33,559 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:03:33,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,580 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,580 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,583 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,584 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:33,592 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:03:33,592 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 14:03:33,601 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-12-07 14:03:33,601 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 [2019-12-07 14:03:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:03:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:03:33,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 14:03:33,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,602 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:03:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,616 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,617 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,620 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,620 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:33,628 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:03:33,628 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 14:03:33,635 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-12-07 14:03:33,635 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 [2019-12-07 14:03:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:03:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:03:33,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 14:03:33,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,636 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:03:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,648 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,649 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:33,652 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:03:33,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:33,664 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 14:03:33,664 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 14:03:33,671 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 4 states. [2019-12-07 14:03:33,671 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 [2019-12-07 14:03:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:03:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 14:03:33,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 14:03:33,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 14:03:33,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 14:03:33,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:33,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-12-07 14:03:33,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:03:33,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 16 transitions. [2019-12-07 14:03:33,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 14:03:33,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 14:03:33,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-12-07 14:03:33,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:03:33,675 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 14:03:33,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-12-07 14:03:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-12-07 14:03:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:03:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 14:03:33,676 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 14:03:33,676 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 14:03:33,676 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:03:33,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 14:03:33,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 14:03:33,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:03:33,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:03:33,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 14:03:33,677 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:03:33,677 INFO L794 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 300#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 301#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-12-07 14:03:33,677 INFO L796 eck$LassoCheckResult]: Loop: 302#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 305#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-12-07 14:03:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,677 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-12-07 14:03:33,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426332787] [2019-12-07 14:03:33,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-12-07 14:03:33,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572003647] [2019-12-07 14:03:33,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:33,688 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 3 times [2019-12-07 14:03:33,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:03:33,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783248579] [2019-12-07 14:03:33,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:03:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:03:33,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:03:33,730 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,730 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,730 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,730 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,730 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:03:33,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-12-07 14:03:33,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,731 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,783 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:33,783 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:03:33,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:33,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:03:33,800 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:03:33,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:03:33,953 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:03:33,955 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:03:33,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:03:33,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:03:33,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:03:33,955 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:03:33,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:33,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:03:33,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:03:33,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-12-07 14:03:33,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:03:33,955 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:03:33,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:33,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:03:34,002 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:03:34,003 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:34,005 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 [2019-12-07 14:03:34,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:34,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:34,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:34,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:34,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:34,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:34,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:34,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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 [2019-12-07 14:03:34,011 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 [2019-12-07 14:03:34,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:34,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:34,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:34,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:34,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:34,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:34,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:34,014 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:34,018 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 [2019-12-07 14:03:34,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:34,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:03:34,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:34,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:34,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:34,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:03:34,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:03:34,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:34,025 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 [2019-12-07 14:03:34,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:34,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:34,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:34,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:34,028 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:34,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:34,030 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:34,034 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 [2019-12-07 14:03:34,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:03:34,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:03:34,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:03:34,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:03:34,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:03:34,038 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:03:34,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:03:34,050 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-12-07 14:03:34,050 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4a79e0b-8e05-4bc1-826a-27f0aa36867d/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:03:34,053 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:03:34,061 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 14:03:34,061 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:03:34,061 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~m~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~m~0 Supporting invariants [1*ULTIMATE.start_main_~m~0 - 1 >= 0] [2019-12-07 14:03:34,069 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 14:03:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:03:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:34,093 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:03:34,093 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:03:34,099 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 14:03:34,100 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:03:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:03:34,115 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 14:03:34,115 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-12-07 14:03:34,134 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-12-07 14:03:34,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:03:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 14:03:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 14:03:34,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 14:03:34,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:34,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 14:03:34,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:34,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 14:03:34,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:03:34,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2019-12-07 14:03:34,135 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:03:34,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:03:34,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:03:34,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:03:34,136 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 14:03:34,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:03:34,136 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:03:34,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 14:03:34,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:03:34 BoogieIcfgContainer [2019-12-07 14:03:34,140 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:03:34,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:03:34,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:03:34,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:03:34,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:03:32" (3/4) ... [2019-12-07 14:03:34,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:03:34,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:03:34,144 INFO L168 Benchmark]: Toolchain (without parser) took 1862.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -88.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:03:34,145 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:03:34,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:03:34,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:03:34,146 INFO L168 Benchmark]: Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:03:34,146 INFO L168 Benchmark]: RCFGBuilder took 126.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:03:34,146 INFO L168 Benchmark]: BuchiAutomizer took 1527.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:03:34,146 INFO L168 Benchmark]: Witness Printer took 2.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:03:34,148 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 126.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1527.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function i + -1 * m and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 29 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax183 hnf98 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf94 smp100 dnf100 smp100 tf108 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...