./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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-crafted/TelAviv-Amir-Minimum.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 687269bb6882b72a3d48999f1e5c55a1d5283a94 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:00,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:00,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:00,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:00,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:00,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:00,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:00,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:00,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:00,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:00,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:00,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:00,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:00,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:00,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:00,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:00,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:00,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:00,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:00,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:00,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:00,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:00,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:00,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:00,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:00,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:00,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:00,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:00,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:00,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:00,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:00,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:00,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:00,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:00,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:00,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:00,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:00,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:00,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:00,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:00,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:00,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:00,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:00,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:00,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:00,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:00,935 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:00,936 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:00,936 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:00,936 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:00,936 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:00,937 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:00,937 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:00,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:00,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:00,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:00,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:00,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:00,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:00,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:00,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:00,940 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:00,940 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:00,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:00,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:00,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:00,941 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:00,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:00,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:00,942 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:00,943 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:00,943 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 -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2019-11-28 02:57:01,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:01,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:01,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:01,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:01,295 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:01,297 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-28 02:57:01,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9f4a33/49bb96541cc04fa19b968affe6d14164/FLAGfb397bb22 [2019-11-28 02:57:01,836 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:01,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2019-11-28 02:57:01,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9f4a33/49bb96541cc04fa19b968affe6d14164/FLAGfb397bb22 [2019-11-28 02:57:02,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f9f4a33/49bb96541cc04fa19b968affe6d14164 [2019-11-28 02:57:02,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:02,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:02,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:02,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:02,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:02,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e30af7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02, skipping insertion in model container [2019-11-28 02:57:02,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:02,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:02,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:02,451 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:02,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:02,483 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:02,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02 WrapperNode [2019-11-28 02:57:02,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:02,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:02,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:02,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:02,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:02,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:02,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:02,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:02,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (1/1) ... [2019-11-28 02:57:02,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:02,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:02,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:02,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:02,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (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 [2019-11-28 02:57:02,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:02,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:02,812 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:02,813 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:57:02,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02 BoogieIcfgContainer [2019-11-28 02:57:02,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:02,815 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:02,815 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:02,819 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:02,820 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:02,821 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:02" (1/3) ... [2019-11-28 02:57:02,822 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f35b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2019-11-28 02:57:02,822 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:02,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:02" (2/3) ... [2019-11-28 02:57:02,823 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f35b961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:02, skipping insertion in model container [2019-11-28 02:57:02,823 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:02,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/3) ... [2019-11-28 02:57:02,825 INFO L371 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2019-11-28 02:57:02,878 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:02,879 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:02,879 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:02,879 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:02,879 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:02,879 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:02,880 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:02,880 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:02,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:57:02,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:02,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:02,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:02,938 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:02,938 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:02,939 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:02,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:57:02,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:02,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:02,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:02,943 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:02,943 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:02,959 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2019-11-28 02:57:02,960 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2019-11-28 02:57:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:57:02,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:02,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813787210] [2019-11-28 02:57:02,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,091 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2019-11-28 02:57:03,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:03,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040688204] [2019-11-28 02:57:03,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,126 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2019-11-28 02:57:03,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:03,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166135631] [2019-11-28 02:57:03,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:03,151 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:03,249 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:03,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:03,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:03,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:03,251 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:03,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:03,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:03,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-28 02:57:03,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:03,252 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:03,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:03,424 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:03,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:03,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:03,445 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:03,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:03,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:03,472 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:03,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:03,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:03,495 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2019-11-28 02:57:03,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:03,513 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2019-11-28 02:57:03,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:03,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:03,579 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:03,582 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:03,582 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:03,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:03,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:03,583 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:03,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:03,584 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:03,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2019-11-28 02:57:03,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:03,584 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:03,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:03,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:03,723 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:03,733 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:03,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:03,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:03,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:03,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,747 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:03,747 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:03,754 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:03,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:03,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:03,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:03,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:03,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:03,784 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:03,785 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,791 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:03,808 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:03,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:03,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:03,811 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:03,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:03,813 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 02:57:03,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:03,817 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:03,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:03,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:03,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:03,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:03,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:03,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:03,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:03,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,845 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:03,852 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:03,852 INFO L444 ModelExtractionUtils]: 2 out of 5 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:03,869 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:03,869 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:03,869 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:03,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:03,876 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:03,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:03,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:03,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:03,931 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:03,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:03,999 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:04,000 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2019-11-28 02:57:04,077 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2019-11-28 02:57:04,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-28 02:57:04,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 02:57:04,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 02:57:04,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-28 02:57:04,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-11-28 02:57:04,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-28 02:57:04,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2019-11-28 02:57:04,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-28 02:57:04,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-28 02:57:04,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-28 02:57:04,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:04,099 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-28 02:57:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-28 02:57:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-11-28 02:57:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 02:57:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-28 02:57:04,135 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-28 02:57:04,136 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-28 02:57:04,136 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:04,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-11-28 02:57:04,139 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-28 02:57:04,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:04,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:04,140 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:04,140 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:04,141 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-28 02:57:04,141 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2019-11-28 02:57:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 02:57:04,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720335083] [2019-11-28 02:57:04,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,167 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2019-11-28 02:57:04,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108040791] [2019-11-28 02:57:04,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,200 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2019-11-28 02:57:04,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933290700] [2019-11-28 02:57:04,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,214 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,254 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:04,254 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:04,254 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:04,254 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:04,254 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:04,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,255 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:04,255 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:04,255 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-28 02:57:04,255 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:04,255 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:04,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,368 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:04,368 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:04,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:04,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:04,384 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:04,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:04,401 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 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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:04,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:04,490 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:04,492 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:04,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:04,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:04,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:04,493 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:04,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:04,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:04,493 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2019-11-28 02:57:04,493 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:04,494 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:04,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,605 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:04,605 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:04,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:04,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:04,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:04,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:04,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:04,627 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:04,627 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,634 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:04,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:04,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:04,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:04,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:04,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:04,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:04,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:04,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:04,662 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:04,662 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:04,669 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:04,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:04,670 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:04,670 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:04,674 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:04,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:04,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:04,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:04,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:04,755 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:04,755 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-11-28 02:57:04,800 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2019-11-28 02:57:04,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-28 02:57:04,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:04,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 02:57:04,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-28 02:57:04,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:04,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-11-28 02:57:04,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:04,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2019-11-28 02:57:04,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 02:57:04,809 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 02:57:04,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2019-11-28 02:57:04,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:04,809 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-28 02:57:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2019-11-28 02:57:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-28 02:57:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 02:57:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-11-28 02:57:04,814 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-28 02:57:04,814 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-11-28 02:57:04,814 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:04,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2019-11-28 02:57:04,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:04,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:04,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:04,818 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:04,818 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:04,818 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-28 02:57:04,820 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2019-11-28 02:57:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2019-11-28 02:57:04,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104897071] [2019-11-28 02:57:04,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2019-11-28 02:57:04,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800292835] [2019-11-28 02:57:04,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,867 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2019-11-28 02:57:04,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:04,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589151708] [2019-11-28 02:57:04,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:04,902 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:04,933 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:04,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:04,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:04,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:04,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:04,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:04,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:04,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:04,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-28 02:57:04,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:04,934 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:04,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:04,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,042 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:05,042 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) [2019-11-28 02:57:05,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:05,049 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,054 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:05,055 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} 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 [2019-11-28 02:57:05,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:05,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:05,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:05,078 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:05,088 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2019-11-28 02:57:05,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:05,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:05,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:05,242 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:05,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:05,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:05,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:05,243 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:05,243 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,243 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:05,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:05,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2019-11-28 02:57:05,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:05,245 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:05,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,342 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:05,342 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:05,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:05,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:05,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:05,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:05,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:05,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:05,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:05,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,362 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:05,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:05,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:05,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:05,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:05,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:05,385 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:05,385 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,395 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:05,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:05,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:05,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:05,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:05,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:05,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:05,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:05,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:05,425 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:05,425 INFO L444 ModelExtractionUtils]: 2 out of 5 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:05,432 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:05,432 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:05,432 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:05,432 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 02:57:05,439 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:05,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:05,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:05,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:05,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:05,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:05,510 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-28 02:57:05,561 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2019-11-28 02:57:05,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-28 02:57:05,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 02:57:05,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:05,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-28 02:57:05,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:05,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2019-11-28 02:57:05,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:05,564 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-11-28 02:57:05,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:05,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2019-11-28 02:57:05,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-28 02:57:05,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-28 02:57:05,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2019-11-28 02:57:05,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:05,569 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2019-11-28 02:57:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2019-11-28 02:57:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-28 02:57:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:57:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2019-11-28 02:57:05,573 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-28 02:57:05,573 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2019-11-28 02:57:05,573 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:05,573 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2019-11-28 02:57:05,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:05,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:05,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:05,575 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:57:05,575 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:05,575 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-28 02:57:05,575 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2019-11-28 02:57:05,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2019-11-28 02:57:05,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:05,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452419334] [2019-11-28 02:57:05,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,587 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:05,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2019-11-28 02:57:05,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:05,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372860506] [2019-11-28 02:57:05,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,595 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2019-11-28 02:57:05,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:05,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025161774] [2019-11-28 02:57:05,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:05,610 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:05,663 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:05,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:05,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:05,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:05,663 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:05,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:05,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:05,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-28 02:57:05,679 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:05,679 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:05,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,785 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:05,785 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 02:57:05,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:05,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:05,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2019-11-28 02:57:05,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:05,806 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /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) [2019-11-28 02:57:05,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:05,818 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,980 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:05,982 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:05,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:05,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:05,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:05,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:05,983 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:05,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:05,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:05,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2019-11-28 02:57:05,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:05,983 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:05,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:05,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,066 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:06,066 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:06,071 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:06,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:06,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:06,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:06,073 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:06,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:06,075 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 02:57:06,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,078 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:06,089 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:06,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:06,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:06,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:06,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:06,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:06,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:06,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,098 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:06,100 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:06,100 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. 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) [2019-11-28 02:57:06,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:06,105 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:06,105 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:06,105 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:06,107 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:06,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:06,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:06,133 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:06,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:06,155 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:06,155 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-28 02:57:06,197 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2019-11-28 02:57:06,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-28 02:57:06,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-28 02:57:06,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-28 02:57:06,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-28 02:57:06,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,201 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2019-11-28 02:57:06,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-28 02:57:06,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2019-11-28 02:57:06,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-28 02:57:06,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-28 02:57:06,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2019-11-28 02:57:06,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:06,207 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2019-11-28 02:57:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2019-11-28 02:57:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2019-11-28 02:57:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 02:57:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2019-11-28 02:57:06,212 INFO L711 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-28 02:57:06,212 INFO L591 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-28 02:57:06,213 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:57:06,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2019-11-28 02:57:06,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2019-11-28 02:57:06,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:06,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:06,215 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:06,215 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:06,215 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-28 02:57:06,215 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2019-11-28 02:57:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2019-11-28 02:57:06,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145298706] [2019-11-28 02:57:06,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2019-11-28 02:57:06,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587372146] [2019-11-28 02:57:06,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,247 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2019-11-28 02:57:06,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656261011] [2019-11-28 02:57:06,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,275 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,315 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:06,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:06,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:06,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:06,315 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:06,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:06,316 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:06,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-28 02:57:06,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:06,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:06,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,387 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:06,388 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2019-11-28 02:57:06,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:06,404 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:06,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:06,419 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,434 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:06,437 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:06,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:06,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:06,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:06,438 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:06,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:06,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:06,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2019-11-28 02:57:06,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:06,439 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:06,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,529 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:06,529 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:06,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:06,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:06,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:06,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:06,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:06,541 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:06,541 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,546 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) [2019-11-28 02:57:06,553 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:06,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:06,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:06,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:06,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:06,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:06,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:06,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,564 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:06,567 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:06,567 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. 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) [2019-11-28 02:57:06,572 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:06,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:06,572 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:06,572 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,574 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:06,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:06,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:06,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:06,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:06,609 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:06,609 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2019-11-28 02:57:06,640 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2019-11-28 02:57:06,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-28 02:57:06,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-28 02:57:06,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-28 02:57:06,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-28 02:57:06,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:06,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2019-11-28 02:57:06,646 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-28 02:57:06,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2019-11-28 02:57:06,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-28 02:57:06,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-11-28 02:57:06,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2019-11-28 02:57:06,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:06,648 INFO L688 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2019-11-28 02:57:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2019-11-28 02:57:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2019-11-28 02:57:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 02:57:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-11-28 02:57:06,655 INFO L711 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-28 02:57:06,655 INFO L591 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-11-28 02:57:06,655 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:57:06,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2019-11-28 02:57:06,656 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-28 02:57:06,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:06,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:06,658 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:06,658 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:06,659 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-28 02:57:06,660 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2019-11-28 02:57:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,660 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2019-11-28 02:57:06,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381497600] [2019-11-28 02:57:06,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,672 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2019-11-28 02:57:06,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444565250] [2019-11-28 02:57:06,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2019-11-28 02:57:06,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:06,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386812620] [2019-11-28 02:57:06,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:06,694 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:06,731 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:06,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:06,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:06,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:06,731 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:06,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:06,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:06,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-28 02:57:06,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:06,732 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:06,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:06,823 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2019-11-28 02:57:06,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:06,835 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:06,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:06,926 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:06,928 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:06,928 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:06,928 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:06,928 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:06,928 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:06,928 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:06,928 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:06,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:06,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2019-11-28 02:57:06,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:06,929 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:06,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:06,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,013 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:07,013 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:07,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:07,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:07,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:07,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:07,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:07,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:07,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:07,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:07,031 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:07,031 INFO L444 ModelExtractionUtils]: 2 out of 5 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,036 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:07,036 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:07,036 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:07,036 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 02:57:07,038 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:07,085 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:07,085 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-28 02:57:07,113 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2019-11-28 02:57:07,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-28 02:57:07,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-28 02:57:07,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:07,118 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:07,168 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:07,168 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-28 02:57:07,202 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2019-11-28 02:57:07,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:57:07,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-28 02:57:07,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:07,208 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:07,250 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:07,251 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2019-11-28 02:57:07,278 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2019-11-28 02:57:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-28 02:57:07,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-28 02:57:07,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:07,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-28 02:57:07,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:07,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-28 02:57:07,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:07,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2019-11-28 02:57:07,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2019-11-28 02:57:07,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2019-11-28 02:57:07,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-28 02:57:07,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-28 02:57:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2019-11-28 02:57:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:07,286 INFO L688 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2019-11-28 02:57:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2019-11-28 02:57:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2019-11-28 02:57:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-28 02:57:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2019-11-28 02:57:07,292 INFO L711 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-28 02:57:07,292 INFO L591 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2019-11-28 02:57:07,292 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 02:57:07,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2019-11-28 02:57:07,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2019-11-28 02:57:07,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:07,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:07,294 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:57:07,294 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:07,294 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-28 02:57:07,294 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2019-11-28 02:57:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2019-11-28 02:57:07,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:07,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178710291] [2019-11-28 02:57:07,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,312 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2019-11-28 02:57:07,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:07,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182556166] [2019-11-28 02:57:07,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,334 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2019-11-28 02:57:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:07,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774694909] [2019-11-28 02:57:07,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:07,348 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:07,410 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:07,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:07,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:07,410 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:07,410 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:07,410 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:07,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:07,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-28 02:57:07,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:07,411 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:07,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,512 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:07,512 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:07,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:07,522 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:07,522 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:07,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:07,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:07,531 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:07,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:07,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:07,542 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:07,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:07,556 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:07,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:07,570 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,722 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:07,724 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:07,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:07,724 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:07,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:07,724 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:07,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:07,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:07,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2019-11-28 02:57:07,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:07,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:07,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:07,819 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:07,819 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:07,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:07,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:07,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:07,827 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:07,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:07,828 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 02:57:07,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:07,829 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,834 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:07,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:07,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:07,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:07,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:07,838 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:07,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:07,841 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,846 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:07,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:07,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:07,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:07,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:07,853 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:07,853 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:07,858 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:07,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:07,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:07,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:07,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:07,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:07,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:07,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:07,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:07,875 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:07,875 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:07,880 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:07,880 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:07,880 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:07,880 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:07,882 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:07,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:07,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:07,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:07,940 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 [2019-11-28 02:57:07,940 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2019-11-28 02:57:08,040 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2019-11-28 02:57:08,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-28 02:57:08,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-28 02:57:08,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:08,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-28 02:57:08,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:08,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-28 02:57:08,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:08,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2019-11-28 02:57:08,049 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-28 02:57:08,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2019-11-28 02:57:08,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2019-11-28 02:57:08,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2019-11-28 02:57:08,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2019-11-28 02:57:08,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:08,052 INFO L688 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2019-11-28 02:57:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2019-11-28 02:57:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2019-11-28 02:57:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-11-28 02:57:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2019-11-28 02:57:08,068 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-28 02:57:08,068 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2019-11-28 02:57:08,068 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 02:57:08,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2019-11-28 02:57:08,073 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2019-11-28 02:57:08,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:08,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:08,074 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:08,074 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:08,074 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-28 02:57:08,075 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2019-11-28 02:57:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2019-11-28 02:57:08,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:08,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881624355] [2019-11-28 02:57:08,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2019-11-28 02:57:08,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:08,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66644465] [2019-11-28 02:57:08,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,114 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,119 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2019-11-28 02:57:08,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:08,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456712365] [2019-11-28 02:57:08,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:08,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:08,197 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:08,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:08,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:08,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:08,198 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:08,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:08,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:08,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-28 02:57:08,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:08,198 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:08,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:08,324 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:08,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:08,332 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:08,333 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:08,346 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:08,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:08,487 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:08,489 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:08,489 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:08,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:08,490 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:08,490 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:08,490 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,490 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:08,490 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:08,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2019-11-28 02:57:08,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:08,490 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:08,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:08,625 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:08,625 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:08,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:08,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:08,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:08,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:08,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:08,644 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:08,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,649 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:08,657 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:08,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:08,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:08,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:08,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:08,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:08,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:08,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,665 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:08,670 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:08,671 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:08,676 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:08,676 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:08,676 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:08,676 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:08,678 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:08,726 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 [2019-11-28 02:57:08,726 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-28 02:57:08,821 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2019-11-28 02:57:08,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:08,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-28 02:57:08,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-28 02:57:08,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:08,823 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:08,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-28 02:57:08,876 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-28 02:57:08,958 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2019-11-28 02:57:08,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2019-11-28 02:57:08,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-28 02:57:08,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:08,960 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:08,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:08,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:09,022 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-28 02:57:09,022 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2019-11-28 02:57:09,113 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2019-11-28 02:57:09,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2019-11-28 02:57:09,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-28 02:57:09,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2019-11-28 02:57:09,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2019-11-28 02:57:09,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,119 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2019-11-28 02:57:09,124 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2019-11-28 02:57:09,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2019-11-28 02:57:09,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-11-28 02:57:09,128 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2019-11-28 02:57:09,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2019-11-28 02:57:09,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:09,128 INFO L688 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2019-11-28 02:57:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2019-11-28 02:57:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2019-11-28 02:57:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-28 02:57:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2019-11-28 02:57:09,141 INFO L711 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-28 02:57:09,141 INFO L591 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2019-11-28 02:57:09,141 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-28 02:57:09,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2019-11-28 02:57:09,142 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2019-11-28 02:57:09,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:09,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:09,143 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:57:09,143 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:09,144 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-28 02:57:09,144 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2019-11-28 02:57:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2019-11-28 02:57:09,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65026782] [2019-11-28 02:57:09,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,155 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2019-11-28 02:57:09,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688555259] [2019-11-28 02:57:09,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,164 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2019-11-28 02:57:09,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597227405] [2019-11-28 02:57:09,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,176 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,256 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:09,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:09,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:09,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:09,257 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:09,257 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,257 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:09,257 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:09,257 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-28 02:57:09,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:09,257 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:09,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,338 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:09,338 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:09,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:09,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:09,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,361 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,366 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:09,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,374 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:09,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:09,389 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,472 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:09,474 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:09,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:09,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:09,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:09,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:09,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:09,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:09,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2019-11-28 02:57:09,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:09,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:09,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,562 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:09,562 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:09,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:09,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:09,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:09,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:09,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:09,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:09,574 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 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,580 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:09,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:09,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:09,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:09,582 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:09,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:09,583 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 02:57:09,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:09,586 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 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:09,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:09,592 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:09,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:09,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:09,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:09,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:09,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:09,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:09,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:09,606 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 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,610 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:09,610 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:09,610 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:09,610 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:09,613 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:09,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:09,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:09,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:57:09,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:09,663 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 [2019-11-28 02:57:09,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2019-11-28 02:57:09,734 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2019-11-28 02:57:09,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2019-11-28 02:57:09,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-28 02:57:09,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-28 02:57:09,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-28 02:57:09,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:09,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2019-11-28 02:57:09,741 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 02:57:09,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2019-11-28 02:57:09,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-28 02:57:09,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-28 02:57:09,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2019-11-28 02:57:09,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:09,745 INFO L688 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2019-11-28 02:57:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2019-11-28 02:57:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2019-11-28 02:57:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-28 02:57:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2019-11-28 02:57:09,753 INFO L711 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-28 02:57:09,753 INFO L591 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2019-11-28 02:57:09,753 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-28 02:57:09,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2019-11-28 02:57:09,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:57:09,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:09,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:09,755 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2019-11-28 02:57:09,756 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:09,756 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-28 02:57:09,756 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2019-11-28 02:57:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2019-11-28 02:57:09,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779750680] [2019-11-28 02:57:09,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,768 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2019-11-28 02:57:09,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734294447] [2019-11-28 02:57:09,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,775 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2019-11-28 02:57:09,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:09,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153323448] [2019-11-28 02:57:09,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:09,788 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:09,808 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:09,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:09,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:09,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:09,809 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:09,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:09,809 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:09,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-28 02:57:09,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:09,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:09,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:09,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:09,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:09,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:09,897 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:09,906 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:09,906 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:09,912 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:09,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:09,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:10,016 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:10,018 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:10,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:10,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:10,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:10,018 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:10,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:10,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:10,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2019-11-28 02:57:10,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:10,019 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:10,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:10,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:10,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:10,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:10,096 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:10,096 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:10,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:10,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:10,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:10,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:10,103 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:10,103 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:10,108 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 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:10,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:10,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:10,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:10,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:10,115 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:10,115 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:10,118 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 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:10,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:10,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:10,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:10,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:10,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:10,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:10,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:10,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:10,142 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:10,142 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:10,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:10,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:10,148 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:10,148 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:57:10,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:10,200 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:10,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-28 02:57:10,229 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2019-11-28 02:57:10,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-28 02:57:10,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-28 02:57:10,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:10,231 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:10,276 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:10,276 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-28 02:57:10,310 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2019-11-28 02:57:10,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:57:10,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-28 02:57:10,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:10,312 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:10,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:10,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:10,357 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:10,357 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2019-11-28 02:57:10,385 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2019-11-28 02:57:10,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-28 02:57:10,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-28 02:57:10,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:10,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2019-11-28 02:57:10,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:10,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-28 02:57:10,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:10,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2019-11-28 02:57:10,395 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:10,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2019-11-28 02:57:10,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:10,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:10,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:10,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:10,396 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:10,396 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:10,396 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:10,396 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-28 02:57:10,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:10,397 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:10,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:10,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:10 BoogieIcfgContainer [2019-11-28 02:57:10,404 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:10,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:10,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:10,405 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:10,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:02" (3/4) ... [2019-11-28 02:57:10,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:10,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:10,412 INFO L168 Benchmark]: Toolchain (without parser) took 8182.24 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 289.4 MB). Free memory was 960.4 MB in the beginning and 988.1 MB in the end (delta: -27.7 MB). Peak memory consumption was 261.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:10,413 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:10,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:10,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:10,415 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:10,415 INFO L168 Benchmark]: RCFGBuilder took 218.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:10,416 INFO L168 Benchmark]: BuchiAutomizer took 7588.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 143.7 MB). Free memory was 1.1 GB in the beginning and 988.1 MB in the end (delta: 136.9 MB). Peak memory consumption was 280.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:10,416 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 1.3 GB. Free memory is still 988.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:10,419 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 218.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7588.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 143.7 MB). Free memory was 1.1 GB in the beginning and 988.1 MB in the end (delta: 136.9 MB). Peak memory consumption was 280.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.46 ms. Allocated memory is still 1.3 GB. Free memory is still 988.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 5.4s. Construction of modules took 0.3s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...