./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:25:49,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:25:49,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:25:49,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:25:49,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:25:49,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:25:49,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:25:49,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:25:49,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:25:49,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:25:49,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:25:49,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:25:49,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:25:49,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:25:49,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:25:49,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:25:49,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:25:49,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:25:49,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:25:49,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:25:49,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:25:49,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:25:49,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:25:49,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:25:49,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:25:49,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:25:49,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:25:49,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:25:49,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:25:49,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:25:49,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:25:49,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:25:49,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:25:49,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:25:49,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:25:49,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:25:49,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:25:49,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:25:49,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:25:49,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:25:49,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:25:49,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 01:25:49,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:25:49,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:25:49,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:25:49,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:25:49,817 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:25:49,817 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:25:49,817 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:25:49,818 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:25:49,818 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:25:49,819 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:25:49,820 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:25:49,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:25:49,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:25:49,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:25:49,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:25:49,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:25:49,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:25:49,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:25:49,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:25:49,821 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:25:49,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:25:49,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:25:49,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:25:49,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:25:49,823 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:25:49,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:25:49,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:25:49,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:25:49,823 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:25:49,826 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:25:49,826 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2020-11-30 01:25:50,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:25:50,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:25:50,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:25:50,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:25:50,106 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:25:50,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-30 01:25:50,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/data/ff4277e20/2e189374f8cc4415a1cee848f923c1cf/FLAG12defd557 [2020-11-30 01:25:50,642 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:25:50,643 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-30 01:25:50,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/data/ff4277e20/2e189374f8cc4415a1cee848f923c1cf/FLAG12defd557 [2020-11-30 01:25:51,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/data/ff4277e20/2e189374f8cc4415a1cee848f923c1cf [2020-11-30 01:25:51,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:25:51,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:25:51,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:25:51,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:25:51,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:25:51,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4057a314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51, skipping insertion in model container [2020-11-30 01:25:51,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:25:51,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:25:51,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:25:51,257 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:25:51,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:25:51,297 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:25:51,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51 WrapperNode [2020-11-30 01:25:51,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:25:51,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:25:51,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:25:51,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:25:51,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:25:51,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:25:51,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:25:51,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:25:51,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... [2020-11-30 01:25:51,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:25:51,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:25:51,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:25:51,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:25:51,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:25:51,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:25:51,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:25:51,627 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 01:25:51,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:25:51 BoogieIcfgContainer [2020-11-30 01:25:51,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:25:51,629 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:25:51,629 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:25:51,633 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:25:51,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:25:51,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:25:51" (1/3) ... [2020-11-30 01:25:51,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a9778c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:25:51, skipping insertion in model container [2020-11-30 01:25:51,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:25:51,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:25:51" (2/3) ... [2020-11-30 01:25:51,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a9778c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:25:51, skipping insertion in model container [2020-11-30 01:25:51,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:25:51,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:25:51" (3/3) ... [2020-11-30 01:25:51,638 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-11-30 01:25:51,686 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:25:51,686 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:25:51,686 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:25:51,686 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:25:51,686 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:25:51,686 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:25:51,687 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:25:51,687 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:25:51,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-30 01:25:51,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:51,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:51,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:51,722 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:25:51,722 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:25:51,722 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:25:51,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-30 01:25:51,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:51,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:51,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:51,724 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 01:25:51,725 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:25:51,732 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L21true assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 5#L23-2true [2020-11-30 01:25:51,732 INFO L796 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 8#L25-2true assume !(main_~j~0 < main_~m~0); 7#L25-3true main_~i~0 := 1 + main_~i~0; 5#L23-2true [2020-11-30 01:25:51,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:51,738 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-30 01:25:51,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:51,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822012108] [2020-11-30 01:25:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,848 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:51,851 INFO L82 PathProgramCache]: Analyzing trace with hash 42943, now seen corresponding path program 1 times [2020-11-30 01:25:51,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:51,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542672562] [2020-11-30 01:25:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,868 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 29684988, now seen corresponding path program 1 times [2020-11-30 01:25:51,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:51,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087653651] [2020-11-30 01:25:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:51,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:51,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:52,008 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 01:25:52,037 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:52,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:52,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:52,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:52,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:52,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:52,039 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:52,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:52,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration1_Loop [2020-11-30 01:25:52,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:52,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:52,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,218 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:52,218 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:52,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:52,231 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:52,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:52,239 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_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:52,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:52,281 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:52,285 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:52,285 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_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:52,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:52,325 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:52,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:52,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:52,496 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:52,498 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:52,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:52,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:52,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:52,498 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:52,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:52,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:52,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:52,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration1_Loop [2020-11-30 01:25:52,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:52,499 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:52,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:52,798 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:52,802 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:52,815 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 [2020-11-30 01:25:52,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:52,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:52,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:52,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:52,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:52,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:52,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:52,865 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 [2020-11-30 01:25:52,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:52,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:52,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:52,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:52,871 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:52,871 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:52,877 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:52,911 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 [2020-11-30 01:25:52,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:52,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:52,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:52,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:52,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:52,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:52,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:52,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:52,931 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:25:52,931 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_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:52,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:52,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:52,936 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:52,937 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:52,963 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:52,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:53,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:53,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:53,038 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:25:53,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2020-11-30 01:25:53,095 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 42 states and 62 transitions. Complement of second has 8 states. [2020-11-30 01:25:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:25:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2020-11-30 01:25:53,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-30 01:25:53,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-30 01:25:53,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-30 01:25:53,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2020-11-30 01:25:53,105 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:25:53,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 21 transitions. [2020-11-30 01:25:53,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:25:53,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-30 01:25:53,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2020-11-30 01:25:53,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:53,110 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2020-11-30 01:25:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2020-11-30 01:25:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-30 01:25:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:25:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2020-11-30 01:25:53,134 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2020-11-30 01:25:53,134 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2020-11-30 01:25:53,134 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:25:53,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2020-11-30 01:25:53,135 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:25:53,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:53,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:53,136 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:25:53,136 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:25:53,136 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 98#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 99#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 104#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 96#L28-2 [2020-11-30 01:25:53,136 INFO L796 eck$LassoCheckResult]: Loop: 96#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 96#L28-2 [2020-11-30 01:25:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:53,137 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2020-11-30 01:25:53,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:53,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305139525] [2020-11-30 01:25:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2020-11-30 01:25:53,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:53,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525388987] [2020-11-30 01:25:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:53,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:53,164 INFO L82 PathProgramCache]: Analyzing trace with hash 29685042, now seen corresponding path program 1 times [2020-11-30 01:25:53,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:53,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144386325] [2020-11-30 01:25:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,183 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:53,222 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:53,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:53,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:53,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:53,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:53,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:53,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:53,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration2_Loop [2020-11-30 01:25:53,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:53,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:53,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:53,293 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:53,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:53,300 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:53,303 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_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:53,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:53,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:53,331 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:53,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:53,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:53,354 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:53,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:53,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:53,540 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:53,542 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:53,542 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:53,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:53,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:53,542 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:53,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:53,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:53,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration2_Loop [2020-11-30 01:25:53,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:53,543 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:53,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:53,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:53,642 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:53,710 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 [2020-11-30 01:25:53,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:53,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:53,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:53,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:53,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:53,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:53,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:53,782 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 [2020-11-30 01:25:53,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:53,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:53,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:53,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:53,787 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:53,788 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:53,836 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 [2020-11-30 01:25:53,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:53,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:53,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:53,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:53,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:53,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:53,843 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:53,851 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:25:53,851 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_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:53,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:53,854 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:53,854 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:53,854 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:53,889 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:53,930 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:53,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:53,931 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 [2020-11-30 01:25:53,931 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10 Second operand 2 states. [2020-11-30 01:25:53,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 27 states and 43 transitions. Complement of second has 6 states. [2020-11-30 01:25:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:25:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2020-11-30 01:25:53,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-30 01:25:53,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-30 01:25:53,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-30 01:25:53,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:53,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2020-11-30 01:25:53,954 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 01:25:53,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 18 states and 27 transitions. [2020-11-30 01:25:53,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-30 01:25:53,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-30 01:25:53,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 27 transitions. [2020-11-30 01:25:53,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:53,956 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-11-30 01:25:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 27 transitions. [2020-11-30 01:25:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 01:25:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 01:25:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-11-30 01:25:53,970 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-11-30 01:25:53,970 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-11-30 01:25:53,970 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:25:53,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2020-11-30 01:25:53,971 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-30 01:25:53,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:53,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:53,974 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:25:53,974 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:25:53,974 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 181#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 182#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 180#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 188#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 175#L28-3 main_~i~0 := main_~k~0; 186#L25-2 [2020-11-30 01:25:53,975 INFO L796 eck$LassoCheckResult]: Loop: 186#L25-2 assume !(main_~j~0 < main_~m~0); 187#L25-3 main_~i~0 := 1 + main_~i~0; 189#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 186#L25-2 [2020-11-30 01:25:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:53,975 INFO L82 PathProgramCache]: Analyzing trace with hash 920236275, now seen corresponding path program 1 times [2020-11-30 01:25:53,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:53,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648842947] [2020-11-30 01:25:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:53,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:54,000 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash 50233, now seen corresponding path program 2 times [2020-11-30 01:25:54,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:54,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225096264] [2020-11-30 01:25:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:54,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:54,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:54,010 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:54,010 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 1 times [2020-11-30 01:25:54,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:54,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140851981] [2020-11-30 01:25:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:54,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:54,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:54,031 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:54,058 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:54,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:54,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:54,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:54,058 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:54,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:54,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:54,059 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration3_Loop [2020-11-30 01:25:54,059 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:54,059 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:54,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,137 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:54,137 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:54,148 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:54,156 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_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:54,198 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,202 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:54,202 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:54,249 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:54,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:54,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:54,304 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:54,347 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:54,648 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:54,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:54,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:54,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:54,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:54,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:54,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:54,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration3_Loop [2020-11-30 01:25:54,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:54,649 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:54,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:54,772 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:54,773 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:54,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:54,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:54,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:54,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:54,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:54,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:54,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:54,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:54,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:54,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:54,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:54,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:54,817 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:54,817 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:54,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:54,851 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 [2020-11-30 01:25:54,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:54,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:54,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:54,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:54,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:54,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:54,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:54,865 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:54,911 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:25:54,911 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_7c6c0730-ded8-418c-93ce-b695e349d987/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 [2020-11-30 01:25:54,914 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:54,914 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:54,914 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:54,915 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2020-11-30 01:25:54,934 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:54,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:54,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:54,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:55,027 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:25:55,027 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 4 states. [2020-11-30 01:25:55,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 31 states and 51 transitions. Complement of second has 8 states. [2020-11-30 01:25:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:25:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-30 01:25:55,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-30 01:25:55,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:25:55,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-30 01:25:55,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 51 transitions. [2020-11-30 01:25:55,083 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:25:55,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 34 transitions. [2020-11-30 01:25:55,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-30 01:25:55,084 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-30 01:25:55,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 34 transitions. [2020-11-30 01:25:55,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:55,085 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2020-11-30 01:25:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 34 transitions. [2020-11-30 01:25:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-30 01:25:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:25:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2020-11-30 01:25:55,090 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-30 01:25:55,090 INFO L594 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2020-11-30 01:25:55,090 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:25:55,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2020-11-30 01:25:55,091 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 01:25:55,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:55,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:55,092 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-11-30 01:25:55,092 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 01:25:55,092 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 277#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 278#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 288#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 287#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 276#L28-3 main_~i~0 := main_~k~0; 286#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 273#L28-2 [2020-11-30 01:25:55,092 INFO L796 eck$LassoCheckResult]: Loop: 273#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 273#L28-2 [2020-11-30 01:25:55,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 2 times [2020-11-30 01:25:55,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:55,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099442035] [2020-11-30 01:25:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:55,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:55,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:55,138 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:55,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,139 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 2 times [2020-11-30 01:25:55,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:55,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350127884] [2020-11-30 01:25:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:55,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:55,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:55,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash -416201988, now seen corresponding path program 1 times [2020-11-30 01:25:55,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:55,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841070239] [2020-11-30 01:25:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:55,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841070239] [2020-11-30 01:25:55,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:25:55,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:25:55,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821317346] [2020-11-30 01:25:55,253 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:55,253 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:55,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:55,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:55,253 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:55,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:55,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:55,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:55,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration4_Loop [2020-11-30 01:25:55,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:55,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:55,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,315 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:55,315 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:55,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:55,323 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:55,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:55,371 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:55,549 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:55,550 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:55,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:55,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:55,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:55,550 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:55,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:55,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:55,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:55,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration4_Loop [2020-11-30 01:25:55,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:55,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:55,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:55,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:55,639 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/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) [2020-11-30 01:25:55,642 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 [2020-11-30 01:25:55,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:55,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:55,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:55,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:55,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:55,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:55,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:55,648 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:55,652 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 01:25:55,652 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_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:55,655 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:55,655 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:55,656 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:55,656 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:55,688 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,726 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:55,727 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 [2020-11-30 01:25:55,727 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2020-11-30 01:25:55,745 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2020-11-30 01:25:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:25:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-11-30 01:25:55,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-30 01:25:55,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,747 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:25:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:55,805 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 [2020-11-30 01:25:55,805 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2020-11-30 01:25:55,860 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2020-11-30 01:25:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:25:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-11-30 01:25:55,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-30 01:25:55,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,865 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:25:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:55,894 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:55,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:55,896 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 [2020-11-30 01:25:55,896 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2020-11-30 01:25:55,922 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 36 states and 60 transitions. Complement of second has 5 states. [2020-11-30 01:25:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-30 01:25:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2020-11-30 01:25:55,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-30 01:25:55,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-30 01:25:55,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-30 01:25:55,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:55,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 60 transitions. [2020-11-30 01:25:55,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 01:25:55,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 22 states and 33 transitions. [2020-11-30 01:25:55,928 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-30 01:25:55,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-30 01:25:55,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2020-11-30 01:25:55,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:55,929 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2020-11-30 01:25:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2020-11-30 01:25:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-30 01:25:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:25:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2020-11-30 01:25:55,932 INFO L714 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2020-11-30 01:25:55,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:25:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:25:55,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:25:55,936 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2020-11-30 01:25:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:25:55,981 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2020-11-30 01:25:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:25:55,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2020-11-30 01:25:55,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:55,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 26 transitions. [2020-11-30 01:25:55,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-30 01:25:55,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-30 01:25:55,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2020-11-30 01:25:55,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:55,984 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-30 01:25:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2020-11-30 01:25:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 01:25:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 01:25:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2020-11-30 01:25:55,986 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-30 01:25:55,986 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-11-30 01:25:55,987 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 01:25:55,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2020-11-30 01:25:55,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:55,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:55,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:55,988 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-11-30 01:25:55,988 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:25:55,989 INFO L794 eck$LassoCheckResult]: Stem: 535#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 533#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 534#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 540#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 539#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 528#L28-3 main_~i~0 := main_~k~0; 538#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2020-11-30 01:25:55,989 INFO L796 eck$LassoCheckResult]: Loop: 525#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 526#L28-3 main_~i~0 := main_~k~0; 530#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2020-11-30 01:25:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 3 times [2020-11-30 01:25:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:55,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170491882] [2020-11-30 01:25:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:55,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,005 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash 58767, now seen corresponding path program 1 times [2020-11-30 01:25:56,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:56,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303020688] [2020-11-30 01:25:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,014 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -538152755, now seen corresponding path program 4 times [2020-11-30 01:25:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:56,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943828262] [2020-11-30 01:25:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,032 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:56,056 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:56,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:56,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:56,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:56,057 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:56,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:56,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:56,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration5_Loop [2020-11-30 01:25:56,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:56,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:56,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:56,147 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:56,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:56,167 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,174 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:56,174 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=-1, ULTIMATE.start_main_~i~0=-1, ULTIMATE.start_main_~N~0=0} Honda state: {ULTIMATE.start_main_~k~0=-1, ULTIMATE.start_main_~i~0=-1, ULTIMATE.start_main_~N~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:56,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:56,197 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:56,197 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:56,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:56,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:56,223 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:56,245 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:56,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:25:56,377 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:56,379 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:56,379 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:56,379 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:56,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:56,379 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:56,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:56,379 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:56,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration5_Loop [2020-11-30 01:25:56,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:56,379 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:56,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:56,480 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,482 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 [2020-11-30 01:25:56,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:56,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:56,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:56,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:56,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:56,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:56,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:56,547 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 [2020-11-30 01:25:56,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:56,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:56,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:56,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:56,552 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:56,553 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,557 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:56,593 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 [2020-11-30 01:25:56,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:56,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:56,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:56,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:56,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:56,597 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:56,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,600 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,637 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 [2020-11-30 01:25:56,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:56,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:56,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:56,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:56,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:56,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:56,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:56,642 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:56,646 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:25:56,646 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_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:56,650 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:56,650 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:56,650 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:56,650 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,670 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:56,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:56,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:56,740 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 [2020-11-30 01:25:56,741 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-30 01:25:56,758 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 5 states. [2020-11-30 01:25:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:25:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-11-30 01:25:56,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 01:25:56,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:56,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 01:25:56,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:56,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 01:25:56,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:56,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2020-11-30 01:25:56,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:56,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 33 states and 44 transitions. [2020-11-30 01:25:56,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-30 01:25:56,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-30 01:25:56,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2020-11-30 01:25:56,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:56,763 INFO L691 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-11-30 01:25:56,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2020-11-30 01:25:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-11-30 01:25:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 01:25:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 01:25:56,765 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 01:25:56,765 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 01:25:56,766 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 01:25:56,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 35 transitions. [2020-11-30 01:25:56,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:56,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:56,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:56,767 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-30 01:25:56,767 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:25:56,767 INFO L794 eck$LassoCheckResult]: Stem: 640#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 635#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 636#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 637#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 651#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 647#L28-3 main_~i~0 := main_~k~0; 648#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 649#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 650#L28-3 main_~i~0 := main_~k~0; 655#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2020-11-30 01:25:56,767 INFO L796 eck$LassoCheckResult]: Loop: 641#L25-3 main_~i~0 := 1 + main_~i~0; 642#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 653#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2020-11-30 01:25:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,768 INFO L82 PathProgramCache]: Analyzing trace with hash -538152757, now seen corresponding path program 1 times [2020-11-30 01:25:56,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:56,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42822157] [2020-11-30 01:25:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash 67693, now seen corresponding path program 3 times [2020-11-30 01:25:56,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:56,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356820589] [2020-11-30 01:25:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:56,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:56,800 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:56,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1004170083, now seen corresponding path program 2 times [2020-11-30 01:25:56,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:56,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671804375] [2020-11-30 01:25:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 01:25:56,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671804375] [2020-11-30 01:25:56,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997267194] [2020-11-30 01:25:56,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:25:56,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:25:56,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:25:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:56,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 01:25:56,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:25:56,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-30 01:25:56,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720778770] [2020-11-30 01:25:56,905 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:56,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:56,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:56,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:56,905 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:56,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:56,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:56,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:56,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration6_Loop [2020-11-30 01:25:56,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:56,906 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:56,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:56,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:56,974 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:57,003 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:57,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:57,051 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,055 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:57,055 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:57,095 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:57,135 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,436 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:25:57,437 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:57,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:57,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:57,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:57,438 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:25:57,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,438 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:57,438 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:57,438 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration6_Loop [2020-11-30 01:25:57,438 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:57,438 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:57,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,510 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:57,510 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,515 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 [2020-11-30 01:25:57,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:57,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:57,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:57,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:57,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:57,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:57,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:25:57,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,541 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 [2020-11-30 01:25:57,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:57,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:57,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:57,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:57,545 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:25:57,545 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:25:57,555 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,591 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 [2020-11-30 01:25:57,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:25:57,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:25:57,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:25:57,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:25:57,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:25:57,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:25:57,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:25:57,602 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:25:57,602 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_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:57,605 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:25:57,605 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:25:57,605 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:25:57,605 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,635 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:25:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:57,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:25:57,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:25:57,689 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:25:57,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:25:57,711 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 [2020-11-30 01:25:57,711 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16 Second operand 4 states. [2020-11-30 01:25:57,759 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 65 states and 90 transitions. Complement of second has 7 states. [2020-11-30 01:25:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:25:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 01:25:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-30 01:25:57,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 01:25:57,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:57,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 01:25:57,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:57,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 01:25:57,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:25:57,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 90 transitions. [2020-11-30 01:25:57,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-30 01:25:57,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 50 states and 68 transitions. [2020-11-30 01:25:57,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-30 01:25:57,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2020-11-30 01:25:57,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2020-11-30 01:25:57,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:57,768 INFO L691 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2020-11-30 01:25:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2020-11-30 01:25:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2020-11-30 01:25:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 01:25:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-11-30 01:25:57,771 INFO L714 BuchiCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-11-30 01:25:57,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:25:57,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:25:57,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:25:57,772 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-11-30 01:25:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:25:57,848 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2020-11-30 01:25:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:25:57,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2020-11-30 01:25:57,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 01:25:57,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 49 transitions. [2020-11-30 01:25:57,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2020-11-30 01:25:57,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-11-30 01:25:57,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 49 transitions. [2020-11-30 01:25:57,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:25:57,854 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2020-11-30 01:25:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 49 transitions. [2020-11-30 01:25:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2020-11-30 01:25:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:25:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2020-11-30 01:25:57,856 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-11-30 01:25:57,856 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2020-11-30 01:25:57,856 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-30 01:25:57,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2020-11-30 01:25:57,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 01:25:57,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:25:57,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:25:57,857 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:25:57,857 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:25:57,857 INFO L794 eck$LassoCheckResult]: Stem: 909#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 907#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 908#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 916#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 917#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 901#L28-3 main_~i~0 := main_~k~0; 912#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2020-11-30 01:25:57,857 INFO L796 eck$LassoCheckResult]: Loop: 910#L25-3 main_~i~0 := 1 + main_~i~0; 902#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 903#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 898#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 899#L28-3 main_~i~0 := main_~k~0; 920#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2020-11-30 01:25:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:57,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446527, now seen corresponding path program 2 times [2020-11-30 01:25:57,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:57,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207550079] [2020-11-30 01:25:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,874 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2016730719, now seen corresponding path program 1 times [2020-11-30 01:25:57,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:57,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125505509] [2020-11-30 01:25:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,884 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:57,884 INFO L82 PathProgramCache]: Analyzing trace with hash -504812577, now seen corresponding path program 3 times [2020-11-30 01:25:57,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:25:57,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323209291] [2020-11-30 01:25:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:25:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:25:57,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:25:57,900 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:25:57,939 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:25:57,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:25:57,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:25:57,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:25:57,939 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:25:57,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:57,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:25:57,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:25:57,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration7_Loop [2020-11-30 01:25:57,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:25:57,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:25:57,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:57,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:25:58,023 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:25:58,023 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:25:58,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:58,025 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:58,032 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:25:58,032 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:58,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:25:58,054 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:25:58,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:25:58,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:26:10,114 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-11-30 01:26:10,116 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:26:10,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:26:10,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:26:10,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:26:10,116 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:26:10,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:10,116 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:26:10,116 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:26:10,116 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration7_Loop [2020-11-30 01:26:10,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:26:10,116 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:26:10,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:26:10,334 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:10,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:10,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:26:10,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:26:10,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:26:10,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:26:10,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:26:10,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:26:10,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:26:10,343 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:26:10,349 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:26:10,349 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:10,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:26:10,351 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:26:10,351 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:26:10,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-30 01:26:10,371 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:26:10,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:10,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:26:10,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:10,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:26:10,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:26:10,505 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 01:26:10,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2020-11-30 01:26:10,548 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 49 states and 69 transitions. Complement of second has 7 states. [2020-11-30 01:26:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:26:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:26:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-30 01:26:10,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 01:26:10,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:10,549 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:26:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:10,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:26:10,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:26:10,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:26:10,710 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-30 01:26:10,710 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2020-11-30 01:26:10,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 56 states and 79 transitions. Complement of second has 10 states. [2020-11-30 01:26:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-30 01:26:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-30 01:26:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-11-30 01:26:10,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 01:26:10,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:10,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-30 01:26:10,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:10,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 12 letters. [2020-11-30 01:26:10,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:10,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 79 transitions. [2020-11-30 01:26:10,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:26:10,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 43 states and 60 transitions. [2020-11-30 01:26:10,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-30 01:26:10,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-30 01:26:10,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2020-11-30 01:26:10,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 01:26:10,817 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2020-11-30 01:26:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2020-11-30 01:26:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-11-30 01:26:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:26:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2020-11-30 01:26:10,821 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-11-30 01:26:10,821 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-11-30 01:26:10,821 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-30 01:26:10,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 52 transitions. [2020-11-30 01:26:10,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:26:10,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:26:10,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:26:10,823 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:26:10,823 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:26:10,823 INFO L794 eck$LassoCheckResult]: Stem: 1160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 1158#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 1159#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1174#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1171#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1168#L28-3 main_~i~0 := main_~k~0; 1167#L25-2 assume !(main_~j~0 < main_~m~0); 1161#L25-3 main_~i~0 := 1 + main_~i~0; 1154#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1155#L25-2 [2020-11-30 01:26:10,823 INFO L796 eck$LassoCheckResult]: Loop: 1155#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1150#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1151#L28-3 main_~i~0 := main_~k~0; 1155#L25-2 [2020-11-30 01:26:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 4 times [2020-11-30 01:26:10,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:26:10,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995678416] [2020-11-30 01:26:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:26:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,837 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:26:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:10,837 INFO L82 PathProgramCache]: Analyzing trace with hash 51867, now seen corresponding path program 2 times [2020-11-30 01:26:10,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:26:10,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541825636] [2020-11-30 01:26:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:26:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,860 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:26:10,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:10,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1817399595, now seen corresponding path program 5 times [2020-11-30 01:26:10,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:26:10,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623852949] [2020-11-30 01:26:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:26:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:26:10,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:26:10,891 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:26:10,940 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:26:10,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:26:10,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:26:10,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:26:10,940 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 01:26:10,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:10,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:26:10,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:26:10,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration8_Loop [2020-11-30 01:26:10,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:26:10,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:26:10,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:10,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:11,046 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:26:11,047 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:26:11,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 01:26:11,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:26:11,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:26:11,095 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:26:11,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:26:11,137 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 01:26:11,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=2, ULTIMATE.start_main_~i~0=2, ULTIMATE.start_main_~N~0=3} Honda state: {ULTIMATE.start_main_~k~0=2, ULTIMATE.start_main_~i~0=2, ULTIMATE.start_main_~N~0=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 01:26:11,182 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 01:26:11,225 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 01:26:11,450 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:26:11,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:26:11,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:26:11,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:26:11,451 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:26:11,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:26:11,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:26:11,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration8_Loop [2020-11-30 01:26:11,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:26:11,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:26:11,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:11,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:11,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:11,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:26:11,548 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:26:11,548 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,551 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 [2020-11-30 01:26:11,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:26:11,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:26:11,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:26:11,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:26:11,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:26:11,555 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,567 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,611 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 [2020-11-30 01:26:11,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:26:11,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:26:11,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:26:11,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:26:11,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:26:11,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:26:11,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,655 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 [2020-11-30 01:26:11,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:26:11,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:26:11,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:26:11,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:26:11,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:26:11,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:26:11,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,661 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:26:11,667 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 01:26:11,667 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_7c6c0730-ded8-418c-93ce-b695e349d987/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:26:11,671 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 01:26:11,671 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 01:26:11,671 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:26:11,671 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:26:11,707 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 01:26:11,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:26:11,806 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:26:11,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2020-11-30 01:26:11,816 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 55 states and 81 transitions. Complement of second has 5 states. [2020-11-30 01:26:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:26:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:26:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-11-30 01:26:11,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:26:11,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:11,817 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:26:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:26:11,865 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:26:11,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2020-11-30 01:26:11,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 51 states and 75 transitions. Complement of second has 7 states. [2020-11-30 01:26:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-30 01:26:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:26:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-30 01:26:11,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:26:11,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:11,893 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 01:26:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:26:11,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:26:11,932 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 01:26:11,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2020-11-30 01:26:11,948 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 69 states and 104 transitions. Complement of second has 4 states. [2020-11-30 01:26:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:26:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:26:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2020-11-30 01:26:11,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:26:11,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:11,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-30 01:26:11,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:11,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-30 01:26:11,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:26:11,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 104 transitions. [2020-11-30 01:26:11,953 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:26:11,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:26:11,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:26:11,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:26:11,954 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-30 01:26:11,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:26:11,954 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:26:11,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:26:11,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:26:11 BoogieIcfgContainer [2020-11-30 01:26:11,961 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:26:11,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:26:11,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:26:11,962 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:26:11,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:25:51" (3/4) ... [2020-11-30 01:26:11,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:26:11,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:26:11,967 INFO L168 Benchmark]: Toolchain (without parser) took 20917.62 ms. Allocated memory was 77.6 MB in the beginning and 125.8 MB in the end (delta: 48.2 MB). Free memory was 46.4 MB in the beginning and 74.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:26:11,967 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:26:11,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.87 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 46.1 MB in the beginning and 84.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:26:11,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.20 ms. Allocated memory is still 104.9 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:26:11,969 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 104.9 MB. Free memory was 82.9 MB in the beginning and 81.9 MB in the end (delta: 984.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:26:11,969 INFO L168 Benchmark]: RCFGBuilder took 250.35 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 71.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:26:11,969 INFO L168 Benchmark]: BuchiAutomizer took 20331.59 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.8 MB in the beginning and 75.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:26:11,970 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 125.8 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:26:11,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.87 ms. Allocated memory was 77.6 MB in the beginning and 104.9 MB in the end (delta: 27.3 MB). Free memory was 46.1 MB in the beginning and 84.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.20 ms. Allocated memory is still 104.9 MB. Free memory was 84.2 MB in the beginning and 82.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 104.9 MB. Free memory was 82.9 MB in the beginning and 81.9 MB in the end (delta: 984.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 250.35 ms. Allocated memory is still 104.9 MB. Free memory was 81.9 MB in the beginning and 71.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 20331.59 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 71.8 MB in the beginning and 75.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.42 ms. Allocated memory is still 125.8 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (2 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * k + N and consists of 4 locations. One deterministic module has affine ranking function -1 * i + n and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function n + -1 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * k + N and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.2s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 18.5s. Construction of modules took 0.3s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 49 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 163 SDtfs, 160 SDslu, 63 SDs, 0 SdLazy, 133 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax169 hnf96 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 13.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...