./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 aae625cda61f26fa063b78c3d3a58aff5ded8a89 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 22:15:31,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 22:15:31,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 22:15:31,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 22:15:31,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 22:15:31,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 22:15:31,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 22:15:31,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 22:15:31,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 22:15:31,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 22:15:31,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 22:15:31,916 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 22:15:31,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 22:15:31,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 22:15:31,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 22:15:31,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 22:15:31,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 22:15:31,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 22:15:31,921 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 22:15:31,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 22:15:31,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 22:15:31,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 22:15:31,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 22:15:31,926 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 22:15:31,926 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 22:15:31,927 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 22:15:31,927 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 22:15:31,928 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 22:15:31,929 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 22:15:31,929 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 22:15:31,930 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 22:15:31,930 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 22:15:31,930 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 22:15:31,930 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 22:15:31,931 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 22:15:31,932 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 22:15:31,932 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-22 22:15:31,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 22:15:31,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 22:15:31,944 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 22:15:31,944 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 22:15:31,944 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 22:15:31,944 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-22 22:15:31,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 22:15:31,945 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-22 22:15:31,946 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 22:15:31,947 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-22 22:15:31,947 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 22:15:31,947 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 22:15:31,947 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-22 22:15:31,947 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 22:15:31,947 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 22:15:31,947 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-22 22:15:31,948 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-22 22:15:31,948 INFO L133 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 -> aae625cda61f26fa063b78c3d3a58aff5ded8a89 [2018-11-22 22:15:31,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 22:15:31,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 22:15:31,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 22:15:31,982 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 22:15:31,983 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 22:15:31,983 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-11-22 22:15:32,024 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/data/cd16b262d/32fc3ef3d9e247b68e08032ddd2e29ca/FLAGa279ad7cd [2018-11-22 22:15:32,373 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 22:15:32,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/sv-benchmarks/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-11-22 22:15:32,379 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/data/cd16b262d/32fc3ef3d9e247b68e08032ddd2e29ca/FLAGa279ad7cd [2018-11-22 22:15:32,788 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/data/cd16b262d/32fc3ef3d9e247b68e08032ddd2e29ca [2018-11-22 22:15:32,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 22:15:32,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 22:15:32,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 22:15:32,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 22:15:32,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 22:15:32,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536b5fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32, skipping insertion in model container [2018-11-22 22:15:32,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 22:15:32,814 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 22:15:32,919 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:15:32,921 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 22:15:32,931 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 22:15:32,939 INFO L195 MainTranslator]: Completed translation [2018-11-22 22:15:32,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32 WrapperNode [2018-11-22 22:15:32,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 22:15:32,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 22:15:32,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 22:15:32,940 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 22:15:32,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 22:15:32,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 22:15:32,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 22:15:32,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 22:15:32,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... [2018-11-22 22:15:32,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 22:15:32,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 22:15:32,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 22:15:32,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 22:15:32,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 22:15:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 22:15:33,135 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 22:15:33,135 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-22 22:15:33,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:15:33 BoogieIcfgContainer [2018-11-22 22:15:33,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 22:15:33,136 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-22 22:15:33,136 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-22 22:15:33,138 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-22 22:15:33,139 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:15:33,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 10:15:32" (1/3) ... [2018-11-22 22:15:33,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58dc6486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 10:15:33, skipping insertion in model container [2018-11-22 22:15:33,139 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:15:33,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:15:32" (2/3) ... [2018-11-22 22:15:33,140 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58dc6486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 10:15:33, skipping insertion in model container [2018-11-22 22:15:33,140 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 22:15:33,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:15:33" (3/3) ... [2018-11-22 22:15:33,141 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD3_true-termination_true-no-overflow.c [2018-11-22 22:15:33,184 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 22:15:33,185 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-22 22:15:33,185 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-22 22:15:33,185 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-22 22:15:33,185 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 22:15:33,185 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 22:15:33,186 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-22 22:15:33,186 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 22:15:33,186 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-22 22:15:33,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-22 22:15:33,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-22 22:15:33,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:33,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:33,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 22:15:33,220 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-22 22:15:33,220 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-22 22:15:33,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-22 22:15:33,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-22 22:15:33,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:33,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:33,221 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 22:15:33,222 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-22 22:15:33,228 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2018-11-22 22:15:33,228 INFO L796 eck$LassoCheckResult]: Loop: 11#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17true assume 0 == main_~y~0;main_~y~0 := main_~y~0; 7#L21-2true assume !(main_~xtmp~0 > 0); 5#L31-2true assume !true; 4#L31-3true main_~y~0 := main_~xtmp~0; 15#L25-1true main_~x~0 := main_~tmp~0; 11#L13-2true [2018-11-22 22:15:33,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,233 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-22 22:15:33,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:33,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2018-11-22 22:15:33,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:33,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:33,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:15:33,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:15:33,341 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-22 22:15:33,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:15:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:15:33,352 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-22 22:15:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:15:33,384 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-11-22 22:15:33,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:15:33,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2018-11-22 22:15:33,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-22 22:15:33,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2018-11-22 22:15:33,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-22 22:15:33,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-22 22:15:33,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2018-11-22 22:15:33,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 22:15:33,392 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-22 22:15:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2018-11-22 22:15:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-22 22:15:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-22 22:15:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-11-22 22:15:33,409 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-22 22:15:33,409 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-22 22:15:33,410 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-22 22:15:33,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-11-22 22:15:33,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-22 22:15:33,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:33,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:33,411 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 22:15:33,411 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:33,411 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 40#L13-2 [2018-11-22 22:15:33,411 INFO L796 eck$LassoCheckResult]: Loop: 40#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 41#L17 assume !(0 == main_~y~0); 37#L21 assume !(main_~y~0 < 0); 38#L21-2 assume !(main_~xtmp~0 > 0); 45#L31-2 assume !(main_~xtmp~0 < 0); 42#L31-3 main_~y~0 := main_~xtmp~0; 43#L25-1 main_~x~0 := main_~tmp~0; 40#L13-2 [2018-11-22 22:15:33,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-22 22:15:33,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:33,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2018-11-22 22:15:33,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:33,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:33,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 22:15:33,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 22:15:33,440 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-22 22:15:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 22:15:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 22:15:33,440 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-22 22:15:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:15:33,450 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-22 22:15:33,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 22:15:33,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-22 22:15:33,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-22 22:15:33,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2018-11-22 22:15:33,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-22 22:15:33,452 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-22 22:15:33,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2018-11-22 22:15:33,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 22:15:33,452 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-11-22 22:15:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2018-11-22 22:15:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2018-11-22 22:15:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-22 22:15:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-11-22 22:15:33,453 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-22 22:15:33,453 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-22 22:15:33,453 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-22 22:15:33,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2018-11-22 22:15:33,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-22 22:15:33,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:33,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:33,453 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-22 22:15:33,454 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:33,454 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2018-11-22 22:15:33,454 INFO L796 eck$LassoCheckResult]: Loop: 68#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 69#L17 assume !(0 == main_~y~0); 65#L21 assume !(main_~y~0 < 0); 66#L21-2 assume main_~xtmp~0 > 0; 72#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 70#L26-3 main_~y~0 := main_~xtmp~0; 71#L25-1 main_~x~0 := main_~tmp~0; 68#L13-2 [2018-11-22 22:15:33,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2018-11-22 22:15:33,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:33,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2018-11-22 22:15:33,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:33,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2018-11-22 22:15:33,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:33,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:33,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:33,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:33,564 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:33,565 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:33,565 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:33,565 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:33,565 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:15:33,565 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:33,565 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:33,565 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:33,566 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 22:15:33,566 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:33,566 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:33,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:33,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:33,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:33,684 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:33,684 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:33,688 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:33,688 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:33,709 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:15:33,709 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:37,638 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:15:37,640 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:37,640 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:37,640 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:37,640 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:37,640 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:15:37,640 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:37,640 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:37,641 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:37,641 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 22:15:37,641 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:37,641 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:37,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,701 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:37,704 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:15:37,706 INFO L122 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 [2018-11-22 22:15:37,707 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:37,707 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:37,708 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:37,708 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:37,708 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:37,710 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:37,711 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:37,723 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:15:37,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 22:15:37,731 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 22:15:37,733 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:15:37,733 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 22:15:37,734 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:15:37,734 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-22 22:15:37,735 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 22:15:37,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:37,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:37,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:37,828 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-22 22:15:37,829 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-11-22 22:15:37,882 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 27 states and 32 transitions. Complement of second has 9 states. [2018-11-22 22:15:37,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-22 22:15:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-22 22:15:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2018-11-22 22:15:37,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2018-11-22 22:15:37,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:37,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2018-11-22 22:15:37,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:37,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2018-11-22 22:15:37,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:37,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-22 22:15:37,888 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-22 22:15:37,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2018-11-22 22:15:37,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-22 22:15:37,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-22 22:15:37,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2018-11-22 22:15:37,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:15:37,889 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-22 22:15:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2018-11-22 22:15:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-11-22 22:15:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-22 22:15:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-22 22:15:37,891 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-22 22:15:37,891 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-22 22:15:37,891 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-22 22:15:37,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2018-11-22 22:15:37,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-22 22:15:37,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:37,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:37,892 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-22 22:15:37,893 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 22:15:37,893 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2018-11-22 22:15:37,893 INFO L796 eck$LassoCheckResult]: Loop: 170#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2018-11-22 22:15:37,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2018-11-22 22:15:37,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:37,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:37,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:37,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:37,902 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2018-11-22 22:15:37,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:37,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:37,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:37,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2018-11-22 22:15:37,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:37,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:37,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:37,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:37,959 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:37,959 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:37,959 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:37,959 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:37,959 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:15:37,959 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:37,959 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:37,959 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:37,959 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-22 22:15:37,959 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:37,959 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:37,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:37,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,022 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:38,022 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,029 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,045 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:38,045 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,048 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,049 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,051 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:38,051 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,074 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,074 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,076 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:38,077 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,101 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,101 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,104 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:38,104 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,120 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,120 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,165 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:15:38,165 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,277 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:15:38,279 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:38,279 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:38,279 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:38,279 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:38,279 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:15:38,279 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:38,279 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:38,279 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:38,279 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-22 22:15:38,280 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:38,280 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:38,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,381 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:38,381 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:15:38,381 INFO L122 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 [2018-11-22 22:15:38,382 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:38,382 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:38,382 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:38,382 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:38,382 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:38,383 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:38,383 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:38,384 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:38,384 INFO L122 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 [2018-11-22 22:15:38,384 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:38,385 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:38,385 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:38,386 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:38,388 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:38,389 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:38,391 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:38,392 INFO L122 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 [2018-11-22 22:15:38,394 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:38,394 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:38,394 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:38,394 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:38,395 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:38,395 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:38,395 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:38,396 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:38,396 INFO L122 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 [2018-11-22 22:15:38,396 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:38,397 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:38,397 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:38,397 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:38,397 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:38,397 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:38,397 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:38,398 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:38,398 INFO L122 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 [2018-11-22 22:15:38,399 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:38,399 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:38,399 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:38,399 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:38,401 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:38,402 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:38,417 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:15:38,427 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-22 22:15:38,427 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-22 22:15:38,428 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:15:38,429 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-22 22:15:38,430 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:15:38,430 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-22 22:15:38,440 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-22 22:15:38,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:38,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:38,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:38,493 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 [2018-11-22 22:15:38,493 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-22 22:15:38,538 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 31 transitions. Complement of second has 6 states. [2018-11-22 22:15:38,539 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 [2018-11-22 22:15:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 22:15:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-22 22:15:38,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-22 22:15:38,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:38,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-22 22:15:38,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:38,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-22 22:15:38,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:38,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2018-11-22 22:15:38,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-22 22:15:38,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2018-11-22 22:15:38,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-22 22:15:38,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-22 22:15:38,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-11-22 22:15:38,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:15:38,542 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-22 22:15:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-11-22 22:15:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-22 22:15:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-22 22:15:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-22 22:15:38,544 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-22 22:15:38,545 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-22 22:15:38,545 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-22 22:15:38,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-22 22:15:38,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-22 22:15:38,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:38,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:38,546 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:38,546 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:38,546 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 257#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 271#L17 assume !(0 == main_~y~0); 274#L21 assume !(main_~y~0 < 0); 273#L21-2 assume main_~xtmp~0 > 0; 272#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 270#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 262#L26-3 [2018-11-22 22:15:38,546 INFO L796 eck$LassoCheckResult]: Loop: 262#L26-3 main_~y~0 := main_~xtmp~0; 263#L25-1 main_~x~0 := main_~tmp~0; 258#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 259#L17 assume !(0 == main_~y~0); 252#L21 assume !(main_~y~0 < 0); 253#L21-2 assume main_~xtmp~0 > 0; 266#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 262#L26-3 [2018-11-22 22:15:38,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2018-11-22 22:15:38,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:38,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:38,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:38,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:38,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:38,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2018-11-22 22:15:38,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:38,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:38,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:38,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:38,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:38,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2018-11-22 22:15:38,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:38,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:38,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:38,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 22:15:38,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 22:15:38,612 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 22:15:38,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:38,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 22:15:38,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 22:15:38,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-22 22:15:38,684 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:38,684 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:38,685 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:38,685 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:38,685 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:15:38,685 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:38,685 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:38,685 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:38,685 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-22 22:15:38,685 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:38,685 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:38,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:38,751 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:38,751 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,757 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:38,780 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:38,780 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,786 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:38,786 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:38,809 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:15:38,809 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:41,826 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:15:41,828 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:41,829 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:41,829 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:41,829 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:41,829 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:15:41,829 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:41,829 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:41,829 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:41,829 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-22 22:15:41,829 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:41,829 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:41,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:41,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:41,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:41,868 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:41,868 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:15:41,868 INFO L122 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 [2018-11-22 22:15:41,868 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:41,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:41,869 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:41,869 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:41,869 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:41,869 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:41,871 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:41,872 INFO L122 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 [2018-11-22 22:15:41,872 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:41,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:41,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:41,873 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:41,874 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:41,874 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:41,875 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:41,876 INFO L122 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 [2018-11-22 22:15:41,876 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:41,876 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:41,877 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:41,877 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:41,877 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:41,878 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:41,878 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:41,882 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:15:41,885 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 22:15:41,886 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 22:15:41,886 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:15:41,886 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 22:15:41,886 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:15:41,886 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-22 22:15:41,887 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 22:15:41,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:41,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:41,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:41,931 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-22 22:15:41,931 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-22 22:15:41,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 58 states and 72 transitions. Complement of second has 8 states. [2018-11-22 22:15:41,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-22 22:15:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 22:15:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-22 22:15:41,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2018-11-22 22:15:41,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:41,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2018-11-22 22:15:41,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:41,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2018-11-22 22:15:41,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:41,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2018-11-22 22:15:41,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-22 22:15:41,961 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2018-11-22 22:15:41,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-22 22:15:41,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-22 22:15:41,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2018-11-22 22:15:41,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:15:41,961 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2018-11-22 22:15:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2018-11-22 22:15:41,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2018-11-22 22:15:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-22 22:15:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2018-11-22 22:15:41,965 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2018-11-22 22:15:41,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 22:15:41,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-22 22:15:41,965 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2018-11-22 22:15:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 22:15:42,057 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-22 22:15:42,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 22:15:42,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2018-11-22 22:15:42,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-22 22:15:42,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2018-11-22 22:15:42,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-22 22:15:42,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2018-11-22 22:15:42,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2018-11-22 22:15:42,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:15:42,060 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2018-11-22 22:15:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2018-11-22 22:15:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-11-22 22:15:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-22 22:15:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-22 22:15:42,065 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-22 22:15:42,065 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-22 22:15:42,065 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-22 22:15:42,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2018-11-22 22:15:42,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-22 22:15:42,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:42,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:42,066 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:42,066 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 22:15:42,066 INFO L794 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 560#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 576#L17 assume !(0 == main_~y~0); 575#L21 assume !(main_~y~0 < 0); 574#L21-2 assume main_~xtmp~0 > 0; 573#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 572#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 563#L26-3 [2018-11-22 22:15:42,066 INFO L796 eck$LassoCheckResult]: Loop: 563#L26-3 main_~y~0 := main_~xtmp~0; 564#L25-1 main_~x~0 := main_~tmp~0; 561#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 562#L17 assume !(0 == main_~y~0); 557#L21 assume !(main_~y~0 < 0); 558#L21-2 assume main_~xtmp~0 > 0; 565#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 566#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 563#L26-3 [2018-11-22 22:15:42,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:42,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2018-11-22 22:15:42,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:42,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:42,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:42,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2018-11-22 22:15:42,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:42,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:42,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:42,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2018-11-22 22:15:42,082 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:42,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:42,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 22:15:42,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:42,127 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:42,127 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:42,127 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:42,127 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:42,127 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:15:42,127 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:42,127 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:42,127 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:42,127 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-22 22:15:42,127 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:42,128 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:42,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:42,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:42,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:42,165 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:42,165 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:42,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:42,168 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:42,188 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:15:42,188 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:53,694 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:15:53,697 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:53,697 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:53,697 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:53,697 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:53,697 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:15:53,697 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:53,697 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:53,697 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:53,697 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-22 22:15:53,697 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:53,697 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:53,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,742 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:53,742 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:15:53,742 INFO L122 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 [2018-11-22 22:15:53,743 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:53,743 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:53,743 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:53,743 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:53,743 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:53,744 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:53,744 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:53,747 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:15:53,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 22:15:53,749 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 22:15:53,750 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:15:53,750 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 22:15:53,750 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:15:53,750 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-22 22:15:53,750 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 22:15:53,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:53,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:53,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 22:15:53,788 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-22 22:15:53,788 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-22 22:15:53,808 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 54 transitions. Complement of second has 6 states. [2018-11-22 22:15:53,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-22 22:15:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-22 22:15:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-22 22:15:53,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-22 22:15:53,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:53,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-22 22:15:53,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:53,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-22 22:15:53,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:53,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2018-11-22 22:15:53,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 22:15:53,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2018-11-22 22:15:53,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-22 22:15:53,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-22 22:15:53,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2018-11-22 22:15:53,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 22:15:53,813 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-22 22:15:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2018-11-22 22:15:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-11-22 22:15:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-22 22:15:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-11-22 22:15:53,814 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-22 22:15:53,814 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-22 22:15:53,814 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-22 22:15:53,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2018-11-22 22:15:53,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 22:15:53,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 22:15:53,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 22:15:53,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-22 22:15:53,816 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 22:15:53,816 INFO L794 eck$LassoCheckResult]: Stem: 699#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 700#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 718#L17 assume !(0 == main_~y~0); 717#L21 assume !(main_~y~0 < 0); 716#L21-2 assume main_~xtmp~0 > 0; 715#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 713#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 712#L26-3 main_~y~0 := main_~xtmp~0; 708#L25-1 main_~x~0 := main_~tmp~0; 701#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 702#L17 assume !(0 == main_~y~0); 695#L21 assume !(main_~y~0 < 0); 696#L21-2 assume main_~xtmp~0 > 0; 709#L26-2 [2018-11-22 22:15:53,816 INFO L796 eck$LassoCheckResult]: Loop: 709#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 709#L26-2 [2018-11-22 22:15:53,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:53,816 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2018-11-22 22:15:53,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:53,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:53,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:53,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2018-11-22 22:15:53,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:53,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:53,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:53,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2018-11-22 22:15:53,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 22:15:53,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 22:15:53,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 22:15:53,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 22:15:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 22:15:53,895 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:53,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:53,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:53,896 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:53,896 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 22:15:53,896 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:53,896 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:53,896 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:53,896 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-22 22:15:53,896 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:53,896 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:53,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:53,961 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:53,961 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:53,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:53,967 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:53,969 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:53,969 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:53,984 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:53,984 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:53,988 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 22:15:53,988 INFO L448 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/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:54,004 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 22:15:54,004 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5c3f56a-ad10-49ab-9a0f-7acba0286727/bin-2019/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 [2018-11-22 22:15:54,022 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 22:15:54,022 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 22:15:54,154 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 22:15:54,156 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 22:15:54,156 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 22:15:54,156 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 22:15:54,156 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 22:15:54,156 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 22:15:54,156 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 22:15:54,156 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 22:15:54,156 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 22:15:54,156 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-22 22:15:54,156 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 22:15:54,156 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 22:15:54,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 22:15:54,203 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 22:15:54,203 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 22:15:54,203 INFO L122 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 [2018-11-22 22:15:54,203 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,203 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:54,203 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,203 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,204 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:54,204 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:54,204 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:54,204 INFO L122 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 [2018-11-22 22:15:54,204 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,205 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:54,205 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,205 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,205 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,205 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:54,205 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:54,205 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:54,205 INFO L122 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 [2018-11-22 22:15:54,206 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,206 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,206 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,206 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,207 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:54,207 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:54,208 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:54,209 INFO L122 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 [2018-11-22 22:15:54,209 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,209 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 22:15:54,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,209 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 22:15:54,210 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 22:15:54,210 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:54,210 INFO L122 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 [2018-11-22 22:15:54,211 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,211 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,211 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,211 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,212 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:54,212 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:54,214 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 22:15:54,214 INFO L122 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 [2018-11-22 22:15:54,214 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 22:15:54,215 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 22:15:54,215 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 22:15:54,215 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 22:15:54,216 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-22 22:15:54,216 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-22 22:15:54,223 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 22:15:54,227 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-22 22:15:54,227 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-22 22:15:54,227 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 22:15:54,228 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-22 22:15:54,228 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 22:15:54,228 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-22 22:15:54,237 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-22 22:15:54,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:54,272 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 [2018-11-22 22:15:54,272 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-22 22:15:54,289 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2018-11-22 22:15:54,289 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 [2018-11-22 22:15:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 22:15:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-22 22:15:54,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-22 22:15:54,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:54,290 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 22:15:54,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:54,315 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 [2018-11-22 22:15:54,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-22 22:15:54,332 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2018-11-22 22:15:54,333 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 [2018-11-22 22:15:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 22:15:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-22 22:15:54,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-22 22:15:54,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:54,334 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 22:15:54,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 22:15:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 22:15:54,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 22:15:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 22:15:54,357 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 [2018-11-22 22:15:54,357 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-22 22:15:54,376 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 39 transitions. Complement of second has 5 states. [2018-11-22 22:15:54,376 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 [2018-11-22 22:15:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 22:15:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-22 22:15:54,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-22 22:15:54,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:54,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2018-11-22 22:15:54,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:54,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-22 22:15:54,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 22:15:54,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2018-11-22 22:15:54,378 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 22:15:54,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-22 22:15:54,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 22:15:54,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 22:15:54,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 22:15:54,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 22:15:54,378 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:15:54,378 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:15:54,379 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 22:15:54,379 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-22 22:15:54,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-22 22:15:54,379 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 22:15:54,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-22 22:15:54,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 10:15:54 BoogieIcfgContainer [2018-11-22 22:15:54,384 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-22 22:15:54,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 22:15:54,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 22:15:54,384 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 22:15:54,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:15:33" (3/4) ... [2018-11-22 22:15:54,387 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 22:15:54,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 22:15:54,388 INFO L168 Benchmark]: Toolchain (without parser) took 21597.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 958.5 MB in the beginning and 1.0 GB in the end (delta: -63.7 MB). Peak memory consumption was 146.6 MB. Max. memory is 11.5 GB. [2018-11-22 22:15:54,389 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:15:54,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:15:54,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 22:15:54,390 INFO L168 Benchmark]: Boogie Preprocessor took 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:15:54,391 INFO L168 Benchmark]: RCFGBuilder took 164.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 22:15:54,391 INFO L168 Benchmark]: BuchiAutomizer took 21247.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.9 MB). Peak memory consumption was 165.8 MB. Max. memory is 11.5 GB. [2018-11-22 22:15:54,391 INFO L168 Benchmark]: Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 22:15:54,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.01 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 945.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 164.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.0 MB in the beginning and 1.1 GB in the end (delta: -179.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 21247.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.9 MB). Peak memory consumption was 165.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2 * xtmp + 1 and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y + 2 * xtmp + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 21.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 20.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 56 SDtfs, 93 SDslu, 16 SDs, 0 SdLazy, 185 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf96 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf90 smp100 dnf100 smp100 tf103 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 18.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...