./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:02:42,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:02:42,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:02:42,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:02:42,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:02:42,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:02:42,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:02:42,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:02:42,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:02:42,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:02:42,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:02:42,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:02:42,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:02:42,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:02:42,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:02:42,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:02:42,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:02:42,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:02:42,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:02:42,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:02:42,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:02:42,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:02:42,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:02:42,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:02:42,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:02:42,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:02:42,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:02:42,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:02:42,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:02:42,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:02:42,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:02:42,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:02:42,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:02:42,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:02:42,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:02:42,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:02:42,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:02:42,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:02:42,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:02:42,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:02:42,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:02:42,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:02:43,004 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:02:43,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:02:43,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:02:43,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:02:43,005 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:02:43,005 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:02:43,005 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:02:43,005 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:02:43,006 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:02:43,006 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:02:43,006 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:02:43,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:02:43,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:02:43,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:02:43,007 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:02:43,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:02:43,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:02:43,008 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:02:43,009 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:02:43,009 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2019-12-07 18:02:43,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:02:43,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:02:43,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:02:43,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:02:43,127 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:02:43,127 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-12-07 18:02:43,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/data/f310f192e/531453ed809c4ba39cbc501cd4663c49/FLAGabf9bbd28 [2019-12-07 18:02:43,560 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:02:43,561 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-12-07 18:02:43,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/data/f310f192e/531453ed809c4ba39cbc501cd4663c49/FLAGabf9bbd28 [2019-12-07 18:02:43,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/data/f310f192e/531453ed809c4ba39cbc501cd4663c49 [2019-12-07 18:02:43,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:02:43,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:02:43,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:02:43,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:02:43,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:02:43,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bdc395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43, skipping insertion in model container [2019-12-07 18:02:43,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:02:43,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:02:43,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:02:43,705 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:02:43,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:02:43,761 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:02:43,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43 WrapperNode [2019-12-07 18:02:43,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:02:43,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:02:43,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:02:43,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:02:43,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:02:43,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:02:43,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:02:43,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:02:43,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... [2019-12-07 18:02:43,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:02:43,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:02:43,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:02:43,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:02:43,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:02:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:02:43,945 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:02:43,945 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 18:02:43,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:43 BoogieIcfgContainer [2019-12-07 18:02:43,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:02:43,946 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:02:43,946 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:02:43,949 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:02:43,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:43,950 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:02:43" (1/3) ... [2019-12-07 18:02:43,950 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b88db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:02:43, skipping insertion in model container [2019-12-07 18:02:43,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:43,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:02:43" (2/3) ... [2019-12-07 18:02:43,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12b88db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:02:43, skipping insertion in model container [2019-12-07 18:02:43,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:02:43,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:43" (3/3) ... [2019-12-07 18:02:43,952 INFO L371 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2019-12-07 18:02:43,984 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:02:43,984 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:02:43,984 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:02:43,985 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:02:43,985 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:02:43,985 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:02:43,985 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:02:43,985 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:02:43,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:02:44,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:44,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:44,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:44,012 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:02:44,012 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:44,012 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:02:44,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:02:44,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:44,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:44,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:44,013 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:02:44,013 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:44,018 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2019-12-07 18:02:44,019 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2019-12-07 18:02:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,023 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 18:02:44,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276940949] [2019-12-07 18:02:44,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-12-07 18:02:44,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569648776] [2019-12-07 18:02:44,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,107 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,109 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-12-07 18:02:44,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750668473] [2019-12-07 18:02:44,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,117 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,177 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:44,177 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:44,177 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:44,178 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:44,178 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:44,178 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,178 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:44,178 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:44,178 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2019-12-07 18:02:44,178 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:44,179 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:44,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,274 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:44,275 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:44,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:44,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:44,285 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:44,289 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:44,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:44,407 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:44,408 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:44,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:44,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:44,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:44,409 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:44,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:44,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:44,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration1_Lasso [2019-12-07 18:02:44,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:44,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:44,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,466 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:44,469 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:44,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:44,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:44,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:44,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:44,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:44,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:44,488 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:44,494 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 18:02:44,495 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,499 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:44,502 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:02:44,503 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:44,503 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-12-07 18:02:44,508 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 18:02:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:44,545 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:02:44,546 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:44,553 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:44,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:44,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:02:44,566 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 18:02:44,605 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-12-07 18:02:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:02:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 18:02:44,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:02:44,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:44,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:02:44,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:44,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 18:02:44,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:44,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-12-07 18:02:44,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:44,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-12-07 18:02:44,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 18:02:44,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 18:02:44,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 18:02:44,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:02:44,615 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 18:02:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 18:02:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 18:02:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 18:02:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 18:02:44,632 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 18:02:44,632 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 18:02:44,632 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:02:44,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-12-07 18:02:44,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:44,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:44,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:44,633 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:02:44,633 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:44,633 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2019-12-07 18:02:44,633 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2019-12-07 18:02:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,633 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-12-07 18:02:44,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510935076] [2019-12-07 18:02:44,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,641 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-12-07 18:02:44,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591306349] [2019-12-07 18:02:44,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,645 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:44,646 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-12-07 18:02:44,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:44,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623382138] [2019-12-07 18:02:44,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:44,654 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:44,687 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:44,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:44,688 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:44,688 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:44,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:44,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,688 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:44,688 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:44,688 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2019-12-07 18:02:44,688 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:44,688 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:44,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,744 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:44,744 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:44,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:44,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:44,750 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_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:44,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:44,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:44,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:44,761 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:44,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:44,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:44,924 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:44,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:44,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:44,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:44,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:44,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:44,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:44,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration2_Lasso [2019-12-07 18:02:44,924 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:44,924 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:44,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:44,984 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:44,985 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:44,988 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:44,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:44,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:44,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:44,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:44,991 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:44,991 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:44,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,016 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,016 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:45,021 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:45,026 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:02:45,027 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,029 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:45,031 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:02:45,032 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:45,032 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-12-07 18:02:45,035 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 18:02:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,058 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,058 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,071 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,071 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:45,072 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-12-07 18:02:45,072 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-12-07 18:02:45,101 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2019-12-07 18:02:45,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 18:02:45,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:02:45,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:02:45,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 18:02:45,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-12-07 18:02:45,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:45,104 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 18:02:45,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 18:02:45,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 18:02:45,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-12-07 18:02:45,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:02:45,105 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 18:02:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-12-07 18:02:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 18:02:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:02:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 18:02:45,106 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 18:02:45,106 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 18:02:45,106 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:02:45,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2019-12-07 18:02:45,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:02:45,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:45,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:45,107 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-12-07 18:02:45,107 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:45,108 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2019-12-07 18:02:45,108 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2019-12-07 18:02:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-12-07 18:02:45,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580179682] [2019-12-07 18:02:45,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,117 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-12-07 18:02:45,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513023036] [2019-12-07 18:02:45,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,122 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,122 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-12-07 18:02:45,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865493334] [2019-12-07 18:02:45,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,133 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,176 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:45,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:45,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:45,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:45,176 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:45,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:45,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:45,177 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2019-12-07 18:02:45,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:45,177 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:45,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,241 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:45,242 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,254 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_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,268 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_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,271 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:45,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:45,386 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:45,386 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:45,386 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:45,386 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:45,387 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:45,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:45,387 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:45,387 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration3_Lasso [2019-12-07 18:02:45,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:45,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:45,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,442 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:45,442 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,445 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,448 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,453 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,454 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,458 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,461 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,461 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:45,464 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:45,475 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,482 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,482 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:45,488 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:45,496 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-12-07 18:02:45,496 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,499 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:45,501 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:02:45,501 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:45,501 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2019-12-07 18:02:45,506 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 18:02:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,531 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,531 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,543 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,543 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:45,543 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-12-07 18:02:45,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 18:02:45,570 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2019-12-07 18:02:45,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 18:02:45,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:02:45,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,571 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:02:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,589 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,599 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,599 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:45,599 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-12-07 18:02:45,599 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 18:02:45,621 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2019-12-07 18:02:45,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 18:02:45,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:02:45,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,622 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:02:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,641 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,641 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:45,652 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:45,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:45,653 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-12-07 18:02:45,653 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-12-07 18:02:45,674 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2019-12-07 18:02:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 18:02:45,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:02:45,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 18:02:45,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 18:02:45,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:45,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2019-12-07 18:02:45,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:02:45,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2019-12-07 18:02:45,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 18:02:45,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 18:02:45,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-12-07 18:02:45,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:02:45,676 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-12-07 18:02:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-12-07 18:02:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2019-12-07 18:02:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:02:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-12-07 18:02:45,677 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 18:02:45,677 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 18:02:45,677 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:02:45,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-12-07 18:02:45,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:02:45,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:45,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:45,678 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:02:45,678 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:45,678 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2019-12-07 18:02:45,678 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2019-12-07 18:02:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-12-07 18:02:45,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670950076] [2019-12-07 18:02:45,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,683 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2019-12-07 18:02:45,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268118085] [2019-12-07 18:02:45,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2019-12-07 18:02:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:45,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524881311] [2019-12-07 18:02:45,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:45,693 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:45,710 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:45,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:45,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:45,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:45,710 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:45,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:45,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:45,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2019-12-07 18:02:45,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:45,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:45,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,762 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:45,762 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,768 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,768 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,774 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:45,787 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:45,791 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:45,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:45,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:45,907 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:45,908 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:45,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:45,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:45,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:45,909 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:45,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:45,909 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:45,909 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration4_Lasso [2019-12-07 18:02:45,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:45,909 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:45,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:45,958 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:45,958 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:45,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,963 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:45,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:45,974 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:45,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:45,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:45,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:45,985 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,987 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,987 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:45,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:45,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:45,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:45,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:45,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:45,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:45,997 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:45,997 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:46,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:46,013 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 18:02:46,013 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:46,018 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:02:46,018 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:46,018 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2019-12-07 18:02:46,021 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 18:02:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:46,039 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:02:46,040 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:46,042 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:46,042 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:46,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:02:46,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 18:02:46,057 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2019-12-07 18:02:46,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:02:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 18:02:46,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:02:46,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:02:46,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 18:02:46,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2019-12-07 18:02:46,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:02:46,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2019-12-07 18:02:46,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 18:02:46,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 18:02:46,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2019-12-07 18:02:46,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:02:46,059 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-12-07 18:02:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2019-12-07 18:02:46,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-12-07 18:02:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 18:02:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-12-07 18:02:46,060 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:02:46,060 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:02:46,060 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:02:46,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-12-07 18:02:46,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:02:46,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:02:46,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:02:46,062 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-12-07 18:02:46,062 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:02:46,062 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2019-12-07 18:02:46,062 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2019-12-07 18:02:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:46,062 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-12-07 18:02:46,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:46,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150974718] [2019-12-07 18:02:46,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:46,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-12-07 18:02:46,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:46,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090197313] [2019-12-07 18:02:46,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2019-12-07 18:02:46,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:02:46,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101810603] [2019-12-07 18:02:46,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:02:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:02:46,081 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:02:46,109 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:46,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:46,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:46,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:46,110 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:02:46,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:46,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:46,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2019-12-07 18:02:46,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:46,110 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:46,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,178 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:46,178 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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 [2019-12-07 18:02:46,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:46,184 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_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,192 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:46,192 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:46,199 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:46,206 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:02:46,213 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_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:02:46,217 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/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) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:02:46,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:02:46,433 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:02:46,434 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:02:46,434 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:02:46,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:02:46,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:02:46,434 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:02:46,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,435 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:02:46,435 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:02:46,435 INFO L133 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1.c_Iteration5_Lasso [2019-12-07 18:02:46,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:02:46,435 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:02:46,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:02:46,502 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:02:46,502 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:46,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:46,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:46,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:46,511 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:46,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:46,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:46,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:46,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:46,517 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:46,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:46,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,523 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:02:46,523 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:02:46,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:46,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:46,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:46,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:46,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:46,535 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:02:46,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:02:46,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:02:46,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:02:46,543 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:02:46,544 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:02:46,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:02:46,550 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 18:02:46,550 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 18:02:46,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:02:46,556 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2019-12-07 18:02:46,556 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-12-07 18:02:46,577 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:02:46,592 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-12-07 18:02:46,593 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00552adc-429f-4b2d-a0f5-6aaf16cb0d14/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:02:46,595 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:02:46,599 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 4. [2019-12-07 18:02:46,599 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:02:46,599 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 2*ULTIMATE.start_main_~y2~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0, 1*ULTIMATE.start_main_~y2~0 >= 0] [2019-12-07 18:02:46,604 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2019-12-07 18:02:46,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:02:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:46,636 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:02:46,637 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:02:46,647 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:02:46,648 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:02:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:02:46,659 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 18:02:46,659 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 18:02:46,676 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2019-12-07 18:02:46,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:02:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:02:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-12-07 18:02:46,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 18:02:46,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 18:02:46,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 18:02:46,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:02:46,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-12-07 18:02:46,678 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:02:46,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-12-07 18:02:46,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:02:46,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:02:46,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:02:46,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:02:46,678 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:02:46,678 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:02:46,678 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:02:46,678 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 18:02:46,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:02:46,679 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:02:46,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:02:46,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:02:46 BoogieIcfgContainer [2019-12-07 18:02:46,683 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:02:46,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:02:46,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:02:46,684 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:02:46,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:02:43" (3/4) ... [2019-12-07 18:02:46,686 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:02:46,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:02:46,687 INFO L168 Benchmark]: Toolchain (without parser) took 3108.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -195.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,687 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:02:46,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,688 INFO L168 Benchmark]: Boogie Preprocessor took 11.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,689 INFO L168 Benchmark]: RCFGBuilder took 151.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:02:46,689 INFO L168 Benchmark]: BuchiAutomizer took 2737.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 57.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,689 INFO L168 Benchmark]: Witness Printer took 2.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:02:46,691 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 182.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.72 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2737.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 57.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 2.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (0 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function 2 * y2 + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 64 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax154 hnf93 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq149 hnf96 smp85 dnf112 smp97 tf100 neg95 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 53ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...