./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/GCD3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.25-9a8b2e8 [2020-10-20 06:35:22,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:22,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:22,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:22,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:22,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:22,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:22,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:22,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:22,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:22,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:22,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:22,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:22,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:22,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:22,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:22,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:22,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:22,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:22,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:22,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:22,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:22,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:22,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:22,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:22,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:22,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:22,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:22,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:22,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:22,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:22,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:22,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:22,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:22,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:22,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:22,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:22,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:22,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:23,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:23,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:23,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:23,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:23,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:23,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:23,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:23,030 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:23,030 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:23,030 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:23,030 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:23,031 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:23,031 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:23,031 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:23,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:23,032 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:23,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:23,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:23,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:23,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:23,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:23,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:23,033 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:23,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:23,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:23,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:23,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:23,035 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:23,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:23,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:23,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:23,036 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:23,036 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:23,037 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2020-10-20 06:35:23,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:23,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:23,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:23,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:23,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:23,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD3.c [2020-10-20 06:35:23,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31379bf0/7dcdc4efe6eb4d848fd009698e750643/FLAG4f9a62dce [2020-10-20 06:35:23,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:23,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD3.c [2020-10-20 06:35:23,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31379bf0/7dcdc4efe6eb4d848fd009698e750643/FLAG4f9a62dce [2020-10-20 06:35:24,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d31379bf0/7dcdc4efe6eb4d848fd009698e750643 [2020-10-20 06:35:24,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:24,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:24,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:24,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:24,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:24,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16005ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24, skipping insertion in model container [2020-10-20 06:35:24,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:24,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:24,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:24,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:24,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:24,483 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:24,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24 WrapperNode [2020-10-20 06:35:24,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:24,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:24,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:24,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:24,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:24,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:24,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:24,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:24,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... [2020-10-20 06:35:24,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:24,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:24,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:24,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:24,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:24,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:24,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:24,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:24,805 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:35:24,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:24 BoogieIcfgContainer [2020-10-20 06:35:24,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:24,807 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:24,807 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:24,811 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:24,812 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:24,812 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:24" (1/3) ... [2020-10-20 06:35:24,813 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33f0b9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:24, skipping insertion in model container [2020-10-20 06:35:24,813 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:24,813 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:24" (2/3) ... [2020-10-20 06:35:24,814 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33f0b9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:24, skipping insertion in model container [2020-10-20 06:35:24,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:24,814 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:24" (3/3) ... [2020-10-20 06:35:24,816 INFO L373 chiAutomizerObserver]: Analyzing ICFG GCD3.c [2020-10-20 06:35:24,867 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:24,867 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:24,867 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:24,867 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:24,867 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:24,867 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:24,868 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:24,868 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:24,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-20 06:35:24,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:35:24,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:24,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:24,925 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:24,925 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:35:24,925 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:24,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-20 06:35:24,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:35:24,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:24,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:24,934 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:24,934 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:35:24,955 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2020-10-20 06:35:24,956 INFO L796 eck$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 [2020-10-20 06:35:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:24,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:24,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926027002] [2020-10-20 06:35:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2020-10-20 06:35:25,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030276817] [2020-10-20 06:35:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:25,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030276817] [2020-10-20 06:35:25,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:25,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:35:25,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549238331] [2020-10-20 06:35:25,214 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:35:25,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:35:25,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:35:25,239 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-20 06:35:25,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:25,275 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-10-20 06:35:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:35:25,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-10-20 06:35:25,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:35:25,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2020-10-20 06:35:25,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:35:25,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:35:25,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-10-20 06:35:25,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:25,291 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:35:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-10-20 06:35:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 06:35:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 06:35:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-10-20 06:35:25,321 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:35:25,321 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 06:35:25,322 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:25,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-10-20 06:35:25,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:35:25,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:25,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:25,323 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:25,323 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:25,324 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 [2020-10-20 06:35:25,324 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 [2020-10-20 06:35:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-10-20 06:35:25,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205621731] [2020-10-20 06:35:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2020-10-20 06:35:25,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913441523] [2020-10-20 06:35:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:25,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913441523] [2020-10-20 06:35:25,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:25,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:35:25,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19611024] [2020-10-20 06:35:25,368 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:35:25,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:25,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:35:25,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:35:25,370 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-20 06:35:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:25,386 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-10-20 06:35:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:35:25,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-10-20 06:35:25,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-10-20 06:35:25,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2020-10-20 06:35:25,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-20 06:35:25,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 06:35:25,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2020-10-20 06:35:25,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:25,390 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 06:35:25,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2020-10-20 06:35:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2020-10-20 06:35:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-10-20 06:35:25,392 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 06:35:25,393 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-10-20 06:35:25,393 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:35:25,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2020-10-20 06:35:25,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:25,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:25,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:25,395 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:25,395 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:25,395 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2020-10-20 06:35:25,395 INFO L796 eck$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 [2020-10-20 06:35:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,396 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2020-10-20 06:35:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531509328] [2020-10-20 06:35:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2020-10-20 06:35:25,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462931586] [2020-10-20 06:35:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,438 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2020-10-20 06:35:25,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:25,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263075127] [2020-10-20 06:35:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:25,459 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:25,462 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:25,539 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:25,540 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:25,540 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:25,540 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:25,540 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:25,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:25,541 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:25,541 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:25,541 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2020-10-20 06:35:25,541 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:25,542 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:25,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:25,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:25,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:25,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:25,717 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:25,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:25,733 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:25,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:25,746 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:25,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:25,796 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:25,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:25,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:25,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:25,836 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:25,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:25,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:31,745 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:31,748 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:31,748 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:31,748 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:31,748 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:31,748 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:31,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:31,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:31,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2020-10-20 06:35:31,749 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:31,749 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:31,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:31,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:31,880 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:31,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:31,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:31,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:31,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:31,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:31,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:31,900 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:31,938 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:31,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:31,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:31,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:31,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:31,943 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:31,943 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:31,948 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:31,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:31,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:31,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:31,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:31,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:31,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:31,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:31,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:32,011 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:32,011 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:32,027 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:32,027 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:32,027 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:32,028 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:32,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:32,247 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 [2020-10-20 06:35:32,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2020-10-20 06:35:32,328 INFO L75 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. [2020-10-20 06:35:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:35:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-10-20 06:35:32,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2020-10-20 06:35:32,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2020-10-20 06:35:32,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2020-10-20 06:35:32,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:32,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2020-10-20 06:35:32,337 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:35:32,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2020-10-20 06:35:32,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-10-20 06:35:32,339 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:35:32,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2020-10-20 06:35:32,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:32,340 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-20 06:35:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2020-10-20 06:35:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-20 06:35:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:35:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-20 06:35:32,344 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-20 06:35:32,344 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-20 06:35:32,344 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:35:32,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2020-10-20 06:35:32,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:32,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:32,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:32,348 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:35:32,348 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:35:32,350 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2020-10-20 06:35:32,350 INFO L796 eck$LassoCheckResult]: Loop: 170#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2020-10-20 06:35:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,351 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2020-10-20 06:35:32,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119828457] [2020-10-20 06:35:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,400 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2020-10-20 06:35:32,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829752001] [2020-10-20 06:35:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,421 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2020-10-20 06:35:32,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:32,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090274185] [2020-10-20 06:35:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:32,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:32,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:32,543 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:32,543 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:32,543 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:32,543 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:32,543 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:32,544 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,544 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:32,544 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:32,544 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2020-10-20 06:35:32,544 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:32,544 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:32,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:32,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:32,692 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:32,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:32,695 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:32,700 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:32,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:32,754 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:32,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:32,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:32,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:32,811 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:32,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:32,863 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,124 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:33,127 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:33,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:33,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:33,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:33,127 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:33,127 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:33,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:33,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2020-10-20 06:35:33,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:33,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:33,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,256 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:33,257 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:33,260 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:33,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:33,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:33,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:33,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,266 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:33,266 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:33,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:35:33,296 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:33,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:33,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:33,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:33,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:33,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:33,310 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:33,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:33,343 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 06:35:33,343 INFO L444 ModelExtractionUtils]: 9 out of 16 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:35:33,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:33,353 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-10-20 06:35:33,353 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:33,354 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0, 1*ULTIMATE.start_main_~xtmp~0 >= 0] [2020-10-20 06:35:33,400 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2020-10-20 06:35:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,492 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:33,493 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 [2020-10-20 06:35:33,493 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-20 06:35:33,528 INFO L75 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. [2020-10-20 06:35:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:35:33,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-20 06:35:33,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2020-10-20 06:35:33,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:35:33,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:33,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2020-10-20 06:35:33,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:33,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2020-10-20 06:35:33,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-10-20 06:35:33,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-10-20 06:35:33,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2020-10-20 06:35:33,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:33,535 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-10-20 06:35:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2020-10-20 06:35:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-20 06:35:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 06:35:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-10-20 06:35:33,538 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-20 06:35:33,538 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-10-20 06:35:33,538 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:35:33,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2020-10-20 06:35:33,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 06:35:33,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:33,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:33,540 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:33,541 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:33,541 INFO L794 eck$LassoCheckResult]: Stem: 260#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 261#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 275#L17 assume !(0 == main_~y~0); 278#L21 assume !(main_~y~0 < 0); 277#L21-2 assume main_~xtmp~0 > 0; 276#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 274#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2020-10-20 06:35:33,541 INFO L796 eck$LassoCheckResult]: Loop: 266#L26-3 main_~y~0 := main_~xtmp~0; 267#L25-1 main_~x~0 := main_~tmp~0; 262#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 263#L17 assume !(0 == main_~y~0); 256#L21 assume !(main_~y~0 < 0); 257#L21-2 assume main_~xtmp~0 > 0; 270#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2020-10-20 06:35:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2020-10-20 06:35:33,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900691369] [2020-10-20 06:35:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2020-10-20 06:35:33,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245998572] [2020-10-20 06:35:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:33,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:33,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2020-10-20 06:35:33,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:33,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684256099] [2020-10-20 06:35:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:35:33,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684256099] [2020-10-20 06:35:33,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971397190] [2020-10-20 06:35:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:35:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:33,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:35:33,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:35:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:35:33,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:35:33,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 06:35:33,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705354505] [2020-10-20 06:35:33,774 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:33,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:33,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:33,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:33,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:33,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:33,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:33,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2020-10-20 06:35:33,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:33,776 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:33,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:33,861 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:33,861 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:33,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:33,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:33,871 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:35:33,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:33,900 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:33,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:33,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:35,972 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:35,975 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:35,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:35,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:35,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:35,976 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:35,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:35,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:35,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2020-10-20 06:35:35,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:35,976 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:35,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,075 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:36,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:36,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:36,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,139 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:36,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:36,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:36,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:36,148 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:36,155 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:36,155 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,164 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:36,164 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:36,164 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:36,165 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2020-10-20 06:35:36,186 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:36,283 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:35:36,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2020-10-20 06:35:36,328 INFO L75 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. [2020-10-20 06:35:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-10-20 06:35:36,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2020-10-20 06:35:36,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2020-10-20 06:35:36,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2020-10-20 06:35:36,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2020-10-20 06:35:36,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-20 06:35:36,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2020-10-20 06:35:36,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-10-20 06:35:36,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2020-10-20 06:35:36,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2020-10-20 06:35:36,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,335 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2020-10-20 06:35:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2020-10-20 06:35:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-10-20 06:35:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:35:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-10-20 06:35:36,339 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-10-20 06:35:36,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:36,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:35:36,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:35:36,340 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2020-10-20 06:35:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:36,456 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-20 06:35:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:35:36,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2020-10-20 06:35:36,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-20 06:35:36,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2020-10-20 06:35:36,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-10-20 06:35:36,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-20 06:35:36,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2020-10-20 06:35:36,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,461 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-20 06:35:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2020-10-20 06:35:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-20 06:35:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 06:35:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-20 06:35:36,464 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-20 06:35:36,464 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-20 06:35:36,464 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:35:36,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2020-10-20 06:35:36,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-20 06:35:36,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:36,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:36,466 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:36,466 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:35:36,466 INFO L794 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 564#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 580#L17 assume !(0 == main_~y~0); 579#L21 assume !(main_~y~0 < 0); 578#L21-2 assume main_~xtmp~0 > 0; 577#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 576#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2020-10-20 06:35:36,466 INFO L796 eck$LassoCheckResult]: Loop: 567#L26-3 main_~y~0 := main_~xtmp~0; 568#L25-1 main_~x~0 := main_~tmp~0; 565#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 566#L17 assume !(0 == main_~y~0); 561#L21 assume !(main_~y~0 < 0); 562#L21-2 assume main_~xtmp~0 > 0; 569#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 570#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2020-10-20 06:35:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2020-10-20 06:35:36,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719814502] [2020-10-20 06:35:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2020-10-20 06:35:36,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919924284] [2020-10-20 06:35:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,489 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2020-10-20 06:35:36,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878703749] [2020-10-20 06:35:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,520 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,583 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:36,583 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:36,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:36,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:36,583 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:36,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:36,583 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:36,583 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2020-10-20 06:35:36,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:36,584 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:36,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,679 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,679 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,685 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:36,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:42,883 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:42,885 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:42,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:42,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:42,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:42,886 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:42,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:42,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:42,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:42,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2020-10-20 06:35:42,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:42,886 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:42,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:42,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:42,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:42,985 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:42,987 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:42,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:42,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:42,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:42,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:42,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:42,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:42,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:42,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:43,002 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:43,006 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:43,006 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:43,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:43,008 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:43,008 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2020-10-20 06:35:43,029 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:43,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:43,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:43,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:35:43,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:35:43,087 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-20 06:35:43,127 INFO L75 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. [2020-10-20 06:35:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:35:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-20 06:35:43,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2020-10-20 06:35:43,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:43,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2020-10-20 06:35:43,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:43,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2020-10-20 06:35:43,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:43,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2020-10-20 06:35:43,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:35:43,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2020-10-20 06:35:43,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2020-10-20 06:35:43,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-10-20 06:35:43,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2020-10-20 06:35:43,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:43,136 INFO L691 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-20 06:35:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2020-10-20 06:35:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2020-10-20 06:35:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:35:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-20 06:35:43,151 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-20 06:35:43,151 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-20 06:35:43,151 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:35:43,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2020-10-20 06:35:43,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:35:43,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:43,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:43,153 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:35:43,154 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:35:43,154 INFO L794 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 704#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 722#L17 assume !(0 == main_~y~0); 721#L21 assume !(main_~y~0 < 0); 720#L21-2 assume main_~xtmp~0 > 0; 719#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 718#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 716#L26-3 main_~y~0 := main_~xtmp~0; 712#L25-1 main_~x~0 := main_~tmp~0; 705#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 706#L17 assume !(0 == main_~y~0); 699#L21 assume !(main_~y~0 < 0); 700#L21-2 assume main_~xtmp~0 > 0; 713#L26-2 [2020-10-20 06:35:43,154 INFO L796 eck$LassoCheckResult]: Loop: 713#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 713#L26-2 [2020-10-20 06:35:43,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:43,154 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2020-10-20 06:35:43,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:43,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691668193] [2020-10-20 06:35:43,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,186 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2020-10-20 06:35:43,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:43,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716312579] [2020-10-20 06:35:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,191 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2020-10-20 06:35:43,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:43,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912669034] [2020-10-20 06:35:43,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:43,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:43,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:43,315 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:43,316 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:43,316 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:43,316 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:43,316 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:43,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:43,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:43,318 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2020-10-20 06:35:43,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:43,318 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:43,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,424 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:43,424 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:43,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:43,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:43,434 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:43,457 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:43,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:43,483 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,651 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:43,653 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:43,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:43,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:43,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:43,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:43,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:43,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:43,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2020-10-20 06:35:43,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:43,654 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:43,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:43,746 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:43,746 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:43,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:43,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:43,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:43,754 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:43,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:43,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:43,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:43,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:43,809 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:43,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:43,814 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:43,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:43,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:43,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:43,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,869 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:43,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:43,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:43,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:35:43,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:43,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:43,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:43,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:43,930 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:43,930 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:43,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:43,946 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-20 06:35:43,946 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:43,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:43,951 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 06:35:43,951 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:43,951 INFO L512 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] [2020-10-20 06:35:43,973 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-10-20 06:35:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,023 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:44,024 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 [2020-10-20 06:35:44,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:35:44,058 INFO L75 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. [2020-10-20 06:35:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-10-20 06:35:44,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2020-10-20 06:35:44,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:44,062 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:44,113 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 [2020-10-20 06:35:44,113 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:35:44,151 INFO L75 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. [2020-10-20 06:35:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2020-10-20 06:35:44,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2020-10-20 06:35:44,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:44,159 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:35:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:44,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:44,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:44,213 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 [2020-10-20 06:35:44,213 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:35:44,244 INFO L75 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. [2020-10-20 06:35:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:35:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-20 06:35:44,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2020-10-20 06:35:44,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:44,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2020-10-20 06:35:44,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:44,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2020-10-20 06:35:44,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:44,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2020-10-20 06:35:44,249 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:44,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2020-10-20 06:35:44,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:44,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:44,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:44,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:44,250 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:44,250 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:44,250 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:44,250 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:35:44,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:35:44,251 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:44,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:35:44,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:44 BoogieIcfgContainer [2020-10-20 06:35:44,258 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:44,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:44,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:44,258 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:44,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:24" (3/4) ... [2020-10-20 06:35:44,262 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:35:44,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:44,265 INFO L168 Benchmark]: Toolchain (without parser) took 20038.17 ms. Allocated memory was 41.9 MB in the beginning and 61.9 MB in the end (delta: 19.9 MB). Free memory was 20.3 MB in the beginning and 28.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,266 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.57 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 20.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.51 ms. Allocated memory is still 42.5 MB. Free memory was 20.4 MB in the beginning and 18.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,268 INFO L168 Benchmark]: Boogie Preprocessor took 21.05 ms. Allocated memory is still 42.5 MB. Free memory was 18.9 MB in the beginning and 17.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,269 INFO L168 Benchmark]: RCFGBuilder took 262.91 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 23.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,270 INFO L168 Benchmark]: BuchiAutomizer took 19450.76 ms. Allocated memory was 44.6 MB in the beginning and 61.9 MB in the end (delta: 17.3 MB). Free memory was 23.4 MB in the beginning and 29.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,270 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 61.9 MB. Free memory was 29.0 MB in the beginning and 28.3 MB in the end (delta: 651.3 kB). Peak memory consumption was 651.3 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:44,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 251.57 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 20.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.51 ms. Allocated memory is still 42.5 MB. Free memory was 20.4 MB in the beginning and 18.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.05 ms. Allocated memory is still 42.5 MB. Free memory was 18.9 MB in the beginning and 17.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 262.91 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 17.7 MB in the beginning and 23.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 19450.76 ms. Allocated memory was 44.6 MB in the beginning and 61.9 MB in the end (delta: 17.3 MB). Free memory was 23.4 MB in the beginning and 29.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 14.3 GB. * Witness Printer took 4.37 ms. Allocated memory is still 61.9 MB. Free memory was 29.0 MB in the beginning and 28.3 MB in the end (delta: 651.3 kB). Peak memory consumption was 651.3 kB. Max. memory is 14.3 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 * 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 19.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 18.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. 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, 92 SDslu, 16 SDs, 0 SdLazy, 186 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax149 hnf94 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf90 smp96 dnf100 smp100 tf103 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 14.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...