./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e334e85dd18553afecc96b27cf49a003304cbca8 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:03:12,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:03:12,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:03:12,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:03:12,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:03:12,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:03:12,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:03:12,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:03:12,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:03:12,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:03:12,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:03:12,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:03:12,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:03:12,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:03:12,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:03:12,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:03:12,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:03:12,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:03:12,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:03:12,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:03:12,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:03:12,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:03:12,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:03:12,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:03:12,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:03:12,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:03:12,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:03:12,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:03:12,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:03:12,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:03:12,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:03:12,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:03:12,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:03:12,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:03:12,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:03:12,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:03:12,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:03:12,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:03:12,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:03:12,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:03:12,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:03:12,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 12:03:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:03:12,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:03:12,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:03:12,986 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 12:03:12,986 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 12:03:12,987 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 12:03:12,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:03:12,987 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:03:12,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:03:12,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:03:12,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 12:03:12,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:03:12,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:03:12,989 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 12:03:12,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:03:12,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:03:12,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:03:12,989 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 12:03:12,990 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 12:03:12,990 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_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-12-07 12:03:13,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:03:13,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:03:13,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:03:13,121 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:03:13,121 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:03:13,122 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:03:13,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/data/43d9383f4/30cb2ce45f324b28aa85aa507b608321/FLAGcfc6da336 [2019-12-07 12:03:13,581 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:03:13,581 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:03:13,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/data/43d9383f4/30cb2ce45f324b28aa85aa507b608321/FLAGcfc6da336 [2019-12-07 12:03:13,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/data/43d9383f4/30cb2ce45f324b28aa85aa507b608321 [2019-12-07 12:03:13,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:03:13,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:03:13,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:03:13,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:03:13,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:03:13,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354778c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:03:13,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:03:13,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:03:13,711 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:03:13,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:03:13,764 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:03:13,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13 WrapperNode [2019-12-07 12:03:13,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:03:13,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:03:13,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:03:13,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:03:13,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:03:13,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:03:13,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:03:13,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:03:13,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... [2019-12-07 12:03:13,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:03:13,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:03:13,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:03:13,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:03:13,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:13,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:03:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:03:13,924 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:03:13,924 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 12:03:13,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13 BoogieIcfgContainer [2019-12-07 12:03:13,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:03:13,926 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 12:03:13,926 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 12:03:13,928 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 12:03:13,928 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:03:13,929 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:03:13" (1/3) ... [2019-12-07 12:03:13,929 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77a29936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,929 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:03:13,929 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:03:13" (2/3) ... [2019-12-07 12:03:13,930 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77a29936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:03:13, skipping insertion in model container [2019-12-07 12:03:13,930 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:03:13,930 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13" (3/3) ... [2019-12-07 12:03:13,931 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-12-07 12:03:13,960 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 12:03:13,960 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 12:03:13,961 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 12:03:13,961 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:03:13,961 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:03:13,961 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 12:03:13,961 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:03:13,961 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 12:03:13,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 12:03:13,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:13,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:03:13,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:03:13,986 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 12:03:13,987 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:03:13,987 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 12:03:13,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 12:03:13,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:13,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:03:13,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:03:13,988 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 12:03:13,988 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:03:13,993 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2019-12-07 12:03:13,993 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2019-12-07 12:03:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 12:03:14,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421270721] [2019-12-07 12:03:14,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-12-07 12:03:14,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272924123] [2019-12-07 12:03:14,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,080 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,081 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-12-07 12:03:14,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506339109] [2019-12-07 12:03:14,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,095 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:14,128 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:14,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:14,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:14,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:14,129 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:03:14,129 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:14,129 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:14,129 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:14,129 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-12-07 12:03:14,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:14,130 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:14,150 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 12:03:14,159 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 12:03:14,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:14,169 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 12:03:14,235 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:14,236 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:14,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:14,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:14,247 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_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:14,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:14,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:14,254 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_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:14,257 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:03:14,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:14,386 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:03:14,387 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:14,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:14,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:14,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:14,387 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:03:14,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:14,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:14,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:14,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-12-07 12:03:14,388 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:14,388 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:14,390 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 12:03:14,392 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 12:03:14,395 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 12:03:14,400 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 12:03:14,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:14,447 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,451 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 12:03:14,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:14,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:14,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:14,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:14,457 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:03:14,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:03:14,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,465 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 12:03:14,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:14,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:14,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:14,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:14,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:03:14,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:03:14,472 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,476 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 12:03:14,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:14,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:03:14,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:14,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:14,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:14,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:03:14,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:03:14,481 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:03:14,484 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:03:14,484 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,489 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:03:14,489 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:03:14,489 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:03:14,490 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-12-07 12:03:14,493 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:03:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,519 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,529 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,529 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:14,529 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 12:03:14,540 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:03:14,541 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 12:03:14,566 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-12-07 12:03:14,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 12:03:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:03:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 12:03:14,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 12:03:14,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 12:03:14,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 12:03:14,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-12-07 12:03:14,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:14,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-12-07 12:03:14,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 12:03:14,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 12:03:14,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 12:03:14,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:03:14,576 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 12:03:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 12:03:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 12:03:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 12:03:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 12:03:14,593 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 12:03:14,593 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 12:03:14,593 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 12:03:14,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-12-07 12:03:14,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:14,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:03:14,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:03:14,594 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 12:03:14,594 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:03:14,594 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2019-12-07 12:03:14,594 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2019-12-07 12:03:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,594 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-12-07 12:03:14,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257874642] [2019-12-07 12:03:14,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,616 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 12:03:14,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257874642] [2019-12-07 12:03:14,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:03:14,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:03:14,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739377114] [2019-12-07 12:03:14,619 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 12:03:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-12-07 12:03:14,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421631051] [2019-12-07 12:03:14,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:14,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:14,643 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:14,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:14,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:14,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:14,643 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:03:14,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:14,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:14,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:14,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-12-07 12:03:14,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:14,644 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:14,645 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 12:03:14,647 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 12:03:14,652 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 12:03:14,656 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 12:03:14,689 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:14,690 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:14,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:14,697 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:14,697 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_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:14,701 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:03:14,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:14,830 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:03:14,831 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:14,831 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:14,832 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:14,832 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:14,832 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:03:14,832 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:14,832 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:14,832 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:14,832 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-12-07 12:03:14,832 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:14,832 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:14,833 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 12:03:14,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:14,840 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 12:03:14,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:14,874 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:14,874 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,876 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 12:03:14,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:14,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:14,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:14,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:14,880 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:03:14,880 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:03:14,882 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,886 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 12:03:14,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:14,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:03:14,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:14,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:14,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:14,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:03:14,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:03:14,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:03:14,897 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 12:03:14,897 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:14,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:03:14,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:03:14,900 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:03:14,900 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2019-12-07 12:03:14,901 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:03:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,918 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,922 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:14,923 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 12:03:14,923 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:03:14,923 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 12:03:14,929 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-12-07 12:03:14,930 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 12:03:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:03:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 12:03:14,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 12:03:14,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 12:03:14,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 12:03:14,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:14,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-12-07 12:03:14,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:14,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 12:03:14,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 12:03:14,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 12:03:14,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-12-07 12:03:14,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:03:14,933 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 12:03:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-12-07 12:03:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 12:03:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 12:03:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 12:03:14,935 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 12:03:14,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:03:14,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:03:14,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:03:14,938 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2019-12-07 12:03:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:14,945 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-12-07 12:03:14,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:03:14,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-12-07 12:03:14,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:14,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2019-12-07 12:03:14,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 12:03:14,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 12:03:14,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-12-07 12:03:14,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:03:14,947 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-12-07 12:03:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-12-07 12:03:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 12:03:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 12:03:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-12-07 12:03:14,949 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 12:03:14,949 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 12:03:14,949 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 12:03:14,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-12-07 12:03:14,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:03:14,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:03:14,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:03:14,950 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-12-07 12:03:14,950 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:03:14,950 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2019-12-07 12:03:14,950 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2019-12-07 12:03:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2019-12-07 12:03:14,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:14,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732216884] [2019-12-07 12:03:14,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 12:03:14,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732216884] [2019-12-07 12:03:14,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333585764] [2019-12-07 12:03:14,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:03:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:14,988 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 12:03:14,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 12:03:15,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 12:03:15,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-12-07 12:03:15,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100142941] [2019-12-07 12:03:15,002 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 12:03:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-12-07 12:03:15,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:15,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861909491] [2019-12-07 12:03:15,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,007 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:15,021 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:15,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:15,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:15,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:15,021 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:03:15,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:15,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:15,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:15,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-12-07 12:03:15,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:15,022 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:15,022 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 12:03:15,025 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 12:03:15,029 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 12:03:15,031 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 12:03:15,070 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:15,070 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:15,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:15,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:15,077 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:15,081 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:03:15,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:15,209 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:03:15,210 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:15,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:15,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:15,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:15,210 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:03:15,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:15,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:15,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:15,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-12-07 12:03:15,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:15,211 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:15,212 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 12:03:15,214 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 12:03:15,219 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 12:03:15,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:15,256 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:15,257 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,259 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 12:03:15,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:15,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:15,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:15,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:15,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 12:03:15,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 12:03:15,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,273 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 12:03:15,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:15,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:03:15,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:15,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:15,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:15,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:03:15,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:03:15,278 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:03:15,281 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:03:15,281 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:03:15,283 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:03:15,284 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:03:15,284 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-12-07 12:03:15,286 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:03:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,303 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,307 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,307 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,308 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 12:03:15,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:03:15,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 12:03:15,315 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-12-07 12:03:15,315 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 12:03:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:03:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 12:03:15,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 12:03:15,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,316 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:03:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,338 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,338 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,341 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,342 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,342 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 12:03:15,342 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:03:15,342 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 12:03:15,347 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-12-07 12:03:15,347 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 12:03:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:03:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 12:03:15,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 12:03:15,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,348 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:03:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,360 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,364 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,364 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,364 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 12:03:15,364 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 12:03:15,364 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 12:03:15,370 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2019-12-07 12:03:15,370 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 12:03:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:03:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 12:03:15,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 12:03:15,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-12-07 12:03:15,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-12-07 12:03:15,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-12-07 12:03:15,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:03:15,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2019-12-07 12:03:15,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 12:03:15,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 12:03:15,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-12-07 12:03:15,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:03:15,373 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-12-07 12:03:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-12-07 12:03:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2019-12-07 12:03:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 12:03:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 12:03:15,373 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 12:03:15,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:03:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:03:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:03:15,374 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2019-12-07 12:03:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:03:15,381 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-12-07 12:03:15,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:03:15,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-12-07 12:03:15,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 12:03:15,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2019-12-07 12:03:15,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 12:03:15,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 12:03:15,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-12-07 12:03:15,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:03:15,382 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 12:03:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-12-07 12:03:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-12-07 12:03:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 12:03:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 12:03:15,383 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 12:03:15,383 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 12:03:15,383 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 12:03:15,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-12-07 12:03:15,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:03:15,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:03:15,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:03:15,384 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 12:03:15,384 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-12-07 12:03:15,384 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2019-12-07 12:03:15,384 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2019-12-07 12:03:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-12-07 12:03:15,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:15,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496248601] [2019-12-07 12:03:15,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,391 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:15,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2019-12-07 12:03:15,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:15,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387561278] [2019-12-07 12:03:15,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,398 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2019-12-07 12:03:15,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:03:15,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058191335] [2019-12-07 12:03:15,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:03:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:03:15,408 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:03:15,433 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:15,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:15,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:15,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:15,434 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:03:15,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:15,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:15,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:15,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-12-07 12:03:15,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:15,434 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:15,435 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 12:03:15,439 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 12:03:15,441 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 12:03:15,444 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 12:03:15,473 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:15,473 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:15,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:15,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:15,479 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:15,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:15,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:03:15,486 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:03:15,491 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:03:15,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:03:15,536 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:03:15,538 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:03:15,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:03:15,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:03:15,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:03:15,539 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:03:15,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:03:15,539 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:03:15,539 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:03:15,539 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-12-07 12:03:15,539 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:03:15,539 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:03:15,540 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 12:03:15,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:15,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:03:15,549 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 12:03:15,579 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:03:15,579 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,582 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 12:03:15,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:15,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:03:15,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:15,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:15,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:15,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:03:15,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:03:15,586 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,590 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 12:03:15,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:03:15,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:03:15,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:03:15,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:03:15,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:03:15,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:03:15,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:03:15,593 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:03:15,595 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 12:03:15,595 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_037385d4-0e70-4489-8d38-6b5c21aa4780/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 12:03:15,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:03:15,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:03:15,598 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:03:15,598 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2019-12-07 12:03:15,599 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:03:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:03:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,611 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:03:15,615 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:03:15,615 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:03:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:03:15,638 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 12:03:15,638 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-12-07 12:03:15,648 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2019-12-07 12:03:15,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 12:03:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 12:03:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 12:03:15,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 12:03:15,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 12:03:15,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-12-07 12:03:15,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:03:15,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-12-07 12:03:15,650 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:03:15,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-12-07 12:03:15,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:03:15,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:03:15,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:03:15,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:03:15,650 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:03:15,650 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:03:15,650 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:03:15,650 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 12:03:15,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:03:15,651 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:03:15,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 12:03:15,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:03:15 BoogieIcfgContainer [2019-12-07 12:03:15,655 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 12:03:15,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:03:15,655 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:03:15,655 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:03:15,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:03:13" (3/4) ... [2019-12-07 12:03:15,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:03:15,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:03:15,659 INFO L168 Benchmark]: Toolchain (without parser) took 2062.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.8 MB in the beginning and 1.0 GB in the end (delta: -68.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:15,659 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:03:15,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:15,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.11 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 12:03:15,660 INFO L168 Benchmark]: Boogie Preprocessor took 11.45 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 12:03:15,660 INFO L168 Benchmark]: RCFGBuilder took 127.84 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:15,661 INFO L168 Benchmark]: BuchiAutomizer took 1729.16 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: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:15,661 INFO L168 Benchmark]: Witness Printer took 2.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:03:15,663 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 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.8 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.11 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 11.45 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 127.84 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1729.16 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: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...